cork borer risk assessment
To fit up a wash bottle, it is essential to bore two holes in the cork. Principal or Classified Officer (i.e. Distilled water, in wash bottle. If the ends of the tube are not smooth, smoothen them by rotating the ends in a flame for 2-3 minutes. was cut from each filter with a number 6 cork borer and prepared for TEM analysis via the Zumwalde-Dement procedure outlined in NIOSH Publication Number 77-204. Hold over '880' ammonia fumes. Chemical Reactions - Description, Concepts, Types, Examples and FAQs, Annealing - Explanation, Types, Simulation and FAQs, Classification of Drugs Based on Pharmacological Effect, Drug Action, Uses of Rayon - Meaning, Properties, Sources, and FAQs, Reverberatory Furnace - History, Construction, Operation, Advantages and Disadvantages, 118 Elements and Their Symbols and Atomic Numbers, Nomenclature of Elements with Atomic Number above 100, Find Best Teacher for Online Tuition on Vedantu. A short summary of this paper. When this is done, remove the tube from the flame of the burner. Links to Third Party Sites. fornicata and Euwallacea nr. If appropriate, substitute a piece of metal tubing for glass tubing. This plant risk assessment template has 13 categories to check for plant risks such as fire, suffocation, electricity, cutting, crushing, ergonomics, noise, temperature, and other possible risks in a plant. 3. and Fusarium Dieback (Fusarium euwallaceae)STAGE 1: INITIATION 1. Column chromatography can be performed on larger molecules which may not be readily introduced into the gas phase. 2. Monitoring of pests. As the chromatogram develops (l-r) the two components of the mixture separate. Once the cork gets flexible, press it in a cork presser, which is a mechanical device. Two tubes are fitted into the bores. 23mm, 9. Now, we have softened the cork. As most of these processes involved heating, and hence, knowledge of using a burner is essential. Softening the cork is essential as it hardens with time and exposure to air. An agar plug was cut with a 5-mm cork borer and transferred from each active culture of P. erythroseptica isolate onto a clarified V8 agar plate. All cylinders should be cut into six discs of approximately equal thickness (2mm). Business hours are Monday through Friday, 8:30 a.m. - 3:30 p.m. Payment and pick-up instructions will be included with the invoice sent via email. A business impact analysis (BIA) is the process for determining the potential impacts resulting from the interruption of time sensitive or critical business processes. There are numerous hazards to consider. To ensure that we get a straight hole, mark the borer position on both sides of the cork. Includes a steel ram rod, can be used with rubber stoppers and corks. Take care using a cork borer, a knife and water baths at 60 and 70 C. All the test isolates were incubated . The blade is approximately 2 inches (7 cm) long. In vulputate pharetra nisi nec convallis. Technician's list of equipment needed 0.1 M, 0.5 M, 1 M, 1.5 M, 2 M hydrochloric acid Agar powder . Heavy metals . The control of this investigation is the potato pieces placed in distilled water over 24 hours. Alcohol is highly flammable. Springfield News Sun Customer Service, This process ensures the easy insertion of the tube into the cork. The analyte is dissolved in a quick-drying solvent and spotted near the bottom of the plate. . . Carry sharps with the blade or point protected, eg in a shallow tray, and do not carry them at all if you are likely to be jostled. cork borer risk assessmentbest range amulet osrs Get Business Credit and Financing To Grow Your Business!! A cork borer was sterilized by immersing it in an erlenmeyer flask containing ethanol and heated over an alcohol flame. Let us observe the process of boring a Cork. 3. . The bottom of the paper should be dipped into the solvent but the pigment spot must not be immersed in Adobe d C + "+6.++(:SRB3BMPef`bb`knuruvh} x Using the cork borer, extract several strands of beetroot and cut the middle part, 0.5cm wide. This can especially be the case if my modern but quite expensive set (ca. Risk assessment, Procedure, Results, Analysis and conclusion, Evaluation, Sources or error, Anomalous results, Biological or industrial significance, Health and safety. Janeth Tayone. 1. Keep rotating the tube to ensure uniform heating. Download Download PDF. Pre-seeded nutrient agar plates with bacteria were used and wells of 8 mm diameter were made using sterile cork borer. 91 0 obj <>/Filter/FlateDecode/ID[]/Index[68 37]/Info 67 0 R/Length 106/Prev 692117/Root 69 0 R/Size 105/Type/XRef/W[1 3 1]>>stream Re-measure the length and mass of each cylinder of potato, recording your measurements in the table. Do this using a ruler and a white tile for the most accurate cut. While the water is reaching the desired temperature, get potato and bore out a cylinder with cork borer. 101 Words1 Page. Fornicatus Common name: polyphagous shot hole borer Measure 10cm^3 of the 1.0M salt solution (NaCl) and transfer to the first boiling tube and label it RP3: Steps 5 - 8 5. Cork Oak (Quecus suber) 21. It is the responsibility of teachers doing this demonstration to carry out an appropriate risk assessment . size 6) Boiling tubes RISK ASSESSMENT FORM DESCRIPTION OF THE JOB OR MAIN ACTIVITY Use of water-baths. Thus, a general acquaintance with such operations becomes obvious before taking up the actual experiments. rudy francisco rifle analysis / ford employee profit sharing 2022 / cork borer risk assessment. However, the authors cannot take responsibility for the consequences of performing these experiments. . Questo sito utilizza cookie di profilazione propri o di terze parti. When separation with GC or LC is performed in tandem with mass spectrometry (the "hypenated" techniques of GC-MS and LC-MS), masses of individual fractions is rapidly determined. Care must be taken when using the scalpel. Baseline Sensitivity and Resistance-Risk Assessment of Phytophthora capsici to Iprovalicarb. Keep the smaller end on the table and the bigger end facing up. Wash the cylinders thoroughly to get rid of the pigment that has come out of the broken cells; Add one beetroot cylinder to each of the eight tubes and leave them in the water baths; Shake the tubes once. Put the beetroot pieces into distilled water to wash away pigments that are produced . Cut eight beetroot cylinders using the cork borer. @I$I$@I$I$@I$I$@I$I$@I$I$@I$I$@I$T:q5x_8G. Wash the cylinders thoroughly with water until the water runs clear and pat dry gently with a paper towel. and R. C. Venette. It is a container in which distilled water is taken for conducting experiments. /Type /XObject 1 filter paper with a cork borer (ca 6mm diameter) or a hole punch. Fiber counting and sizing were performed at a magnification of 10,000X. Hold the cork with the help of one hand and the tube with the other. Use a cork borer to cut out six potato chips and cut down the sections into identically sized chips using a ruler and scalpel. Brand Name: Ajax Scientific : Included Components: Ajax Scientific 6 Piece Brass Cork Borer Set : Item Weight: 1.40 ounces Measure out 25ml of 6% Hydrogen-peroxide (H2O2) 7. stream Common detectors for gas chromatography are flame ionization detector (FID), electron capture detector (ECD) and mass spectrometry (MS). 4. This could cause bleeding and harm to yourself. Place 8 boiling tubes of distilled water into 8 water baths of different temperature. Since the rubber is a hard material, usually, the end of the tube inserted is dipped in glycerine or caustic soda solution before fitting it in the hole. Cut the bee Risks Make sure that the potato is placed on a ceramic tile when using the cork borer - do not cut the potato cylinders towards your hand. the time of exposure to the hazard (as a % of the 24 day or a year) the consequence of exposure to the hazard e.g severity of loss/injury/ illness. The empirical McCracken and Stacey stability and risk assessment method has been in use for more than 20 years to assess geotechnical stability issues for raise bored shafts. Jul 3, 2022; fotomontajes de amor para dos personas; Comments: pete walker complex ptsd website; 2. Boring the cork Place the cork on a flat surface area or a table with its narrow end facing up. CUTTING: Can anyone be cut, stabbed or punctured. What is the basic laboratory technique of a Soda-Lime Glass? hbbd```b``&A$?i Cork Borers Products designed to cut a hole in a cork or rubber stopper to insert glass tubing; available as a set, with handles, and as machines. A.C.2.2 AIM: Investigating the effect of Different concentration of Sucrose on Osmosis in potato chips. 3. Cuts from chipped test-tube rims. 5. the requirements laid out in the Young Persons Risk Assessment. Then we should wash it with the running water under the tap. Form the paper into a cylinder. Full PDF Package Download Full PDF Package. Compliant Industries Group qualified risk & hazard assessors are experienced in a wide range of industries - civil construction, mining, transport, forestry, agriculture and oil & gas industries. (cork borer) A B C C B Air sampling A: Sampling head B: PVC tube C: Pump Air sampling After singeing. A sterile 8 mm diameter cork borer was used to make wells in the agar medium for introduction of meat samples. Set of 12 borers, 4-19 mm. Carry sharps with the blade or point protected, eg in a shallow tray, and do not carry them at all if you are likely to be jostled. Contact Seller. POST HOLE BORER..Ph..0475 217 533..Risk and Hazard Assessment is the identification of risks and hazards associated with the POST HOLE BORER. 101 Words1 Page. Consists of a brass cone and heavy steel-cutting edge mounted on a wooden handle. One tube is bent at an angle of 120 while the other tube is bent at 60. Additional Information Interested in this product? Water in the bottle will affect the combustion, leading to disappointing effects. Student safety sheets 71 Sharps including scalpels, knives, syringe needles, seekers etc Student Safety Sheets are teaching materials. The risk rating (high, medium or low) indicates the level of response required to be taken when designing the action plan. (6) Ash wood chips or bark chips that originate in a county or municipal regional county not regulated for the emerald ash borer within a Province or Territory regulated for the emerald ash borer must be accompanied by a permit issued under 319.40-2(a), and a valid certificate with an additional declaration stating that the articles in the . 7. Practical examinations are conducted separately and carry a significant number of marks. Sample preparation varies widely from one type of chromatography to the next, but all types of chromatography require the sample to have a small volume and therefore a high concentration. Measure out 25ml of 6% Hydrogen-peroxide (H2O2) 7. 5. Take care using a cork borer, a knife and water baths at 60 and 70 C. Each piece was then measured and cut at 2cm using the knife. A wash bottle is an apparatus used in science laboratories. Following these recommendations will help make apparatus assembly easier and equipment safer: Add one beetroot cylinder to each of the eight tubes and leave in the water bath for 15 minutes. We thoroughly inspect and report on the current requirements stated in the OHS/WHS Act. 5. SHEARING: Can anybodys body parts be sheared between two parts of the plant or between a part of the plant and work structure? Now, apply some pressure and gently pull the two ends apart. Risk assessment Table 1: Table showing and explaining risks associated with conducting experiment and how they were controlled Risk Explanation How it was controlled Electrocuti on. Quantitative Risk Assessment of Shigella in Drinking water sources View project. Place 3 pieces of the potato samples into a pH 3 buffer for exactly 1 minute. No results found within this category. Risk assessment and management was established as a scientific field some 30-40 years ago. Let us look at the Soda-Lime Glass, it is made by heating soda, silica, and limestone softens readily at about a temperature of 300-400C in the burner flame. Size 2 Cork borer; Knife ; Ruler ; White Tile; Plastic beaker approximately 250cm ; Forceps; Water baths at temperatures 10*C, 40*C and 60*C; Boiling Tube rack; 3 Boiling Tubes; Thermometer (one per water bath) Colorimeter; 4 Cuvettes; Stopwatch ; Distilled Water; Pipette to accurately measure amount; Small measuring cylinders ; Water proof . Set up the apparatus as shown: 4. Spot two samples for the minewater, one with a single addition of solution and one with multiple additions. Moorish American In Court, By being left in distilled water allows the no contamination of the unknown substances or sodium chloride to affect the osmosis process within the potato cells. Place all the discs in a small beaker and wash under a running tap for at least five minutes. Quantitative risk assessment of liver cancer was determined using the Joint FAO/WHO Expert Committee on Food . On the other hand, prescribed fire plays an important role in maintaining and restoring the health and . This temperature can be reached by either cooling, via the use of ice, or by heating, via the use of a Bunsen burner.4. This process concentrates the sample at the top of the column before a second solvent is used to move the solutes through the column to achieve separation. Vw'6s Place buffered potato samples into the boiling tube. 2005. Borers are made of nickel-plated steel; . For risk assessment and hazard analysis and critical control point (HACCP) concepts, it is essential to produce large amounts of quantitative data, which is currently not achievable with the standard cultural based methods for enumera- . words matched: assessment, risk SRA024 - The exploding can; methane & air explosion The. /Filter /DCTDecode Procedure: 1. Cork Oak (Quecus suber) 21. cork borer throughout the experiment, unless . Do not touch the chromic acid as the concentrated HSO is corrosive. It comprises two holes that are in alignment with the air holes of the burner tube. Use a ruler and a scalpel to cut the cylinders to 5cm each. A 1.0 mol dm3 solution of a substance contains one mole of the substance per dm3. 36 0 obj <>/Filter/FlateDecode/ID[<433303F730654F3916B865AB4218C2DE>]/Index[22 34]/Info 21 0 R/Length 84/Prev 116069/Root 23 0 R/Size 56/Type/XRef/W[1 3 1]>>stream There are many variations of chromatography, but all involve the dissolution of an analyte into a fluid known as the mobile phase and the passage of this fluid solution across a stationary phase, often a solid or liquid-coated solid. Hold over '880' ammonia fumes. Perform the same with the end of the tube that is to be used. Introduction . a !1AQa"q2B#$Rb34rC%Scs5&DTdEt6UeuF'Vfv7GWgw(8HXhx )9IYiy November 2010; Phytopathology 100(11):1162-8; . Structural Failures Defects and Risk Assessment . Heavy metals . Chromatography can be used as a purification method but also sees wide use for the identification of compounds based on their chromatographic behavior. Replacement Borer Set for Humboldt Boring Machine. These are the soda-lime glass and borosilicate glass. 100 ul of each dilution of citric acid were poured in the wells and in control well 100 ul distilled water was added. Place buffered potato samples into the boiling tube. A novel strategy to obtain quantitative data for modelling: Combined enrichment and real-time PCR for enumeration of salmonellae from pig carcasses mycelial plugs were prepared using a sterile cork borer and incubated at the following conditions; room temperature, air . Part of this safety process requires a plant risk & hazard assessment of the POST HOLE BORER to be carried out, identifying the risks & hazards associated with its operation. 5. fornicata and Euwallacea nr. R&L Enterprises Cork Borer Sharpeners are for cork borers from 4 to 27mm. U~ _rels/.rels ( J@4ED$Tw-j|zszz*X%(v6O{PI It is the responsibility of teachers doing this demonstration to carry out an appropriate risk assessment . This refined risk assessment supports the value of efforts to slow the spread of . We provide you year-long structured coaching classes for CBSE and ICSE Board & JEE and NEET entrance exam preparation at affordable tuition fees, with an exclusive session for clearing doubts, ensuring that neither you nor the topics remain unattended. Food safety - risk analysis Based on risk assessment >> conclusions on level of control Relevant hazards: CCP level Hazards: CP level . Using a cork borer cut 15 pieces of potato to 3cm long. ;0\x2=. While the water is reaching the desired temperature, get potato and bore out a cylinder with cork borer. The agar was stabbed using the cooled cork borer to the bottom of the dish to create a well. H+T51P0 Bc3=K3C RB!9WW?3P% Sweep up broken glass with brush and dustpan; do not use ngers. Using the technique of Chuaysrinule et al. . All cylinders should be cut into six discs of approximately equal thickness (2mm). Then using a scalpel, cut 7, 1 cm long, cylinders. Micrococcus luteus, Escherichia Place on a tile and cut into 30 discs, each 3mm wide. When climb or down-cut milling. 4. Then cut eight 1cm length slices from these sections. In gas chromatography (GC) the analyte and mobile phase must both be gases or be readily introduced into the gas phase by heating. You ought to know how to cut a glass tube without sustaining an injury. You will see that it will soon become flexible. berwick rangers new stadium. Burner tube: It is a metallic tube that consists of two opposite air holes present at its lower end. Every ten years, each state and the District of Columbia create plans that provide a snapshot of current forest conditions and outline priorities and strategies. A wash bottle produces a fine stream of water that can be utilised for washing away precipitate residues. considerable uncertainty into these models. (Coleoptera, Curculionidae: Scolytinae) also referred to as Euwallacea aff. Therefore, the, cork borer or any other tool you are using to coot the beetroots into pieces, should be used with great care and you should not put your fingers too close to, Risk 2: Burning your hand with boiling water, While pouring the water from the kettle into the boiling tube, there is a risk, that you may accidentally spill water. (cork borer) A B C C B Air sampling A: Sampling head B: PVC tube C: Pump Air sampling After singeing. the requirements laid out in the Young Persons Risk Assessment. Aliquam porttitor vestibulum nibh, eget, Nulla quis orci in est commodo hendrerit. When the chromatography paper is ready, suspend it inside the boiling tube by pinning it to the underside of the bung or by trapping it in a split bung. If you do not have access to this device, simply wrap the cork in a piece of paper and press it under your shoe. >> If there is a minimal distance, then the thin cork layer may result in a break. (It is assumed that these will be thermostatically controlled heated or cooled systems with or without a mechanical shaking facility and with or without a water circulating system, and operating within the range 1 - 95 o C). $15.95. ENTANGLEMENT: Can anyones hair clothing, gloves, necktie, jewelry, cleaning brushes, rags and other materials become entangled with moving parts of plant or materials in motion? Trim the cylinders using a sharp knife and a ruler to the same length (about 3 cm). Take the borer out and reverse the cork when half of the cork has been bored. It is the responsibility of centres to carry out risk assessments for all practical investigations. 2.1 The Multi-Level Risk Assessment Framework 4 2.2 The Three Levels of Analysis and Assessment 6 2.3 Risk Reduction and Management 9 2.4 Evaluation Principles 9 Part B - Methodologies 11 3 Risk Assessment 11 3.1 Determining the Level of Analysis 11 3.2 Presentation of Risk Results and Broad Assessment Principles 14 Each piece was then measured and cut at 2cm using the knife. information regarding hazard identification, risk assessment and recommendations on risk control measures to be taken: The information provided in this document is sourced from the manuals provided by Terex Australia (the designer/manufacturer), attachment manufacturers, the experience of technical personnel from Terex and industry consultants . Set of 12 borers, 4-19 mm. Take an asbestos sheet and place the bent tube on it. HAZARDS TO STAFF AND OTHERS Wildfire and prescribed fire in the Eastern Region. Rugged, versatile machine bores holes in any part of stopper, from 3/16 to 5/8 in. Meat samples were introduced into wells made in the Mueller-Hinton agar medium . These are: Base: This is made of cast iron. This temperature can be reached by either cooling, via the use of ice, or by heating, via the use of a Bunsen burner.4. Risk assessment/safety procedures- 1. As a result, there is potential for an accident to occur. SafetyCulture (formerly iAuditor) templates can be edited to suit the needs of your business. Using cork borer and knife, cut pieces of beetroot into 1 cm length cylinders. Wear eye. Accessed 3/10/2016. with cork borer or pipette, cut a core of mycelium;(if the centre of the colony is producing spores, remove the inoculum from the edge of the colony). Get Latest Price from the seller Contact Seller Product Image Company Details hb```b``Vf`a`` @1XKa]VZkg @k@"1lW21r3a`H/``i,ep9cX/| % hb```jV)Ad`0p`ab8``J8's*[;'FYk7oI```,``J qL~= - . Cut eight beetroot cylinders using a cork borer. Using the technique of Chuaysrinule et al. Such glass should not be kept on a cold surface while it is hot since a sudden cooling may break it. November 2010; Phytopathology 100(11):1162-8; . 5. This temperature can be reached by either cooling, via the use of ice, or by heating, via the use of a Bunsen burner.4. 2h_rwtoi The areas covered in the comprehensive POST HOLE BORER risk and hazard report are: 1. 2. Use a cork borer to cut cylinders of fresh beetroot tissue. `S___x CCR (ii) Lubricate the cork borer with glycerine. On blowing out air through one tube, we see that water comes out from the end of the other tube with considerable force. Allow the tube to cool for a few minutes. 4. Now, leave the apparatus in the chromic acid and after that, clean it in running water. << For obtaining a smooth hole, drill half the hole from one side and the other half from the cork's other side. A Cork borer sharpener is a separate device used to hone the cutting edge to slice the cork more easily. Read Paper. Get 250cm3 beaker and fill with water to about the 150cm3 mark with water at a specific temperature. Place under UV light to observe fluorescence. 7mm, 5. Place the cylinder, spotted end down, into the tank. Download Download PDF. abrir los caminos para la suerte, abundancia y prosperidad. Courtesy photo by Matt Heraifman, Massachusetts Department of Conservation and Recreation. 4.4 Risk assessment. A risk assessment of the likely development of resistance is based on many biological characteristics, such as frequency of mutation, fitness, and virulence. Distance from origin to solvent front to the center. We have grown leaps and bounds to be the best Online Tuition Website in India with immensely talented Vedantu Master Teachers, from the most reputed institutions. These principles . Risk assessment is the determination of level or magnitude of risk having regard to: the frequency/chance of any given hazard manifesting itself the time of exposure to the hazard (as a % of the 24 day or a year) the consequence of exposure to the hazard e.g severity of loss/injury/ illness Each core was cut to approximately 2 grams. Stick Blender Hazard: Lacerations Prepare a range of sucrose solutions eg 0%, 20%, 40% and 100%. cork borer risk assessment July 1, 2022 cork borer risk assessment . Fornicatus Common name: polyphagous shot hole borer Download Download PDF. Potato cylinders (or potato and cork borer) Electronic balance Method Prepare a range of sucrose (sugar) solutions. To minimise esterification, mix the reagents in the order water, acid, ether, alcohol. 37 Full PDFs related to this paper. 665 Carbon St, Billings, MT 59102; service@homesciencetools.com . Following these recommendations will help make apparatus assembly easier and equipment safer: Risk assessment Table 1: Table showing and explaining risks associated with conducting experiment and how they were controlled Risk Explanation How it was controlled Electrocuti on. 104 0 obj <>stream When gang milling. This research was conducted to investigate the assessments of fungal pathogens associated with orange fruit spoilage sold in five markets in Benin metropolis and the . - Health & Safety information and model risk assessments. All borers come with a steel punch to make boring easier. Do not apply too much pressure or the tube can break. Then, hold the tube close to the wet end and insert it into the cork's borehole using a rotatory motion. 3. Keep away from naked flames and ignition sources. Mark the solvent front with a pencil. Use a cork borer to cut cylinders of fresh beetroot tissue. 3. Download Download PDF. Apply gentle pressure so that the tube breaks smoothly without leaving any jarred edges. 55 0 obj <>stream When helpful, use a cork borer as a sleeve for insertion of glass tubes. Diameters of borers in Cork borers set of 6: 4. A punch is included with each set. Page 1 of 22 Rapid Pest Risk Analysis (PRA) for Polyphagous Shot Hole Borer (Euwallacea sp.) Place the cork on a flat surface area or a table with its narrow end facing up. These methods are frequently employed in analytical and forensic science. The experiments are written for experienced science teaching staff to use as instructions for a supervised class of students. 14, 5 pack. According to theory, the potato slices in distilled water should increase in mass as the . Stock for this item is limited, but may be available in a warehouse close to you. Integer ut molestie odio, a viverra ante. ELECTRICAL: Can anyone be injured by electrical shock or burnt. Retrieving Each Cork Borer. One of the problems in managing insect pests in cork oak forests is the difficulty in predicting their outbreaks. Baseline Sensitivity and Resistance-Risk Assessment of Phytophthora capsici to Iprovalicarb. - Health & Safety information and model risk assessments. The experimental details given here are given in good faith and are believed to be safe and workable methods. Optimal culture conditions and oxicity t assessment of Fomitopsis feei (Fr. It is also used to take samples from living trees. . The risk rating (high, medium or low) indicates the level of response required to be taken when designing the action plan. See the accompanying risk nomogram download and . Assessing the risks What are the details of the activity to be undertaken? Om: ) word/_rels/document.xml.rels ( XMo60t!#.pZY%R JZgl/87|w*=H8=H)MyBs!t_y7jXz If the cork that we have taken is a rubber one, we can apply some glycerine to the borer. % It is advisable to always wear gloves. Plant Risk Assessment. These cork borers are also used for tree ring analysis (dendrochronology), taking samples from living trees, and taking samples for experiments when a constant diameter is required. Various chemicals in use may be dangerous and require individual risk assessments. Get Latest Price from the seller. Place in distilled water overnight to remove any dye released on preparation. Water in the bottle will affect the combustion, leading to disappointing effects. There is a risk of . About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . the risk of kidney stones (Honow et al., 2003), possess . A steel copper-plated punch is included with each set ; Specifications for this item. COSHH ASSESSMENT FOR METAL WORKING FLUIDS REQUIRED 2 5 M DESCRIPTION OF CONTROL MEASURES SAFE FROM FLYING SWARF BY USE OF FIXED GUARDS DO NOT LEAN OVER THE MOVING TOOL PPE - WEAR SAFETY GLASSES,. RISK ASSESSMENT EcoSolve High School Written by: Phillip Crisp Commenced on: 20 Feb 2018 Expires: 20 May 2019 Making hydrogen . A cork with two bores is fitted into this flask. Wear a lab coat or cover up clothes in case of beetroot juice spillages or splashes. A cork borer can also be used to punch holes on an agar plate and perform well diffusion assays to study bioactivity in microbiology. Variables- Independent variable: substrate concentration: 0%, 25%, 50%, 75% and 100% of hydrogen Download Download PDF.