The float type meters are not near to a reading even to say, "Close Enough" when used to read ethylene glycol. 3-in-1 Antifreeze Tester in Fahrenheit Scale for Checking Freezing Point and Concentration of Ethylene Glycol or Propylene Glycol Based Automobile Antifreeze Coolant, Also for Battery Acid Condition. Antifreeze | Coolants. Use a refractometer to check antifreeze coolant concentration. Fluids with low glycol concentration … Concentration can be easily and accurately checked using a handheld refractometer. Accuracy: ±0.2%; ATC compensation range: 10°C~30°C (50°F~86°F) Reference Temperature: 20°C ; Length: 170mm. System concentration should not vary significantly from test to test. But when adding make-up fluid to the tank, you must allow for evaporation of the water over time from the working solution. Please view the below video on how to test your system with a refractometer. With simpler operations than a refractometer, the strip verifies that fluids are in good working order to prevent damage to cooling systems. 4.5 out of 5 stars 55. Water freezes at 32° F; however, glycol freezes at 9° F. Mixing the two lowers the freezing point of water, allowing it to run through a chiller system at much lower temperatures without freezing. "Polyethylene Glycol as a Cause of Anaphylaxis." Another often ignored but very important factor is the difference between "working" concentration and "make-up" concentration. Ethylene Glycol Test Kit Ethylene glycol and propylene glycol are the primary ingredients in commercially- available antifreezes. Go Glycol Pros has provided dependable freeze protection and corrosion resistance for over 20 years. $21.99 4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid. Suitable for testing / analyzing the Glycol concentration of engine coolants and antifreeze solutions, such as Mono Propylene Glycol or Mono Ethylene Glycol. Get it as soon as Thu, Mar 4. Ethylene glycol is also commonly used as a coolant for chilled-water air-conditioning systems that either place the chiller or air handlers outside or must cool below the freezing temperature of water. The Hanna Glycol test kit can be used for water as well as oil samples to determine traces of ethylene glycol and other 1,2 glycols above 30 mg/L (ppm). The Lovibond ® Glycol Refractometer offers a convenient, fast and accurate way to assess the glycol concentration of engine coolants and other anti-freeze solutions. Here are a few do’s and don’ts for the proper use of this instrument. The analytical method described here enables the determination of Occupational Exposure Limits (OEL) or MAK values for ethylene glycol, diethylene glycol and propylene glycol in workplace air in the concentration range of a tenth up to twice the OEL or MAK value. Yes, a Duo-Check refractometer, Model 7084, is available from Misco Products (1-800-358-1100) for testing the freeze point of ethylene or propylene glycol solutions. FREE Shipping on orders over $25 shipped by Amazon . Our Palm Abbe digital refractometer can measure the percent concentration of triethylene glycol (TEG) in your dehydration system from 0 to 100 percent (+/- 0.1%). The strips can test for levels in water from 20–60%. In this method, a sample of oil is pipetted into a solution of hydrochloric (HCl) and iodic (HIO3) acid to oxidize any glycol that may be present. Whereas the glycol concentration mainly affects the dew point of the dry gas, the glycol rate controls the total amount of water that can be removed. With unmatched product and systems application knowledge, our team helps each customer do the job right the first time. 99. The fluid in your tank is the working solution and should be at the recommended concentration. Glycol-water mixtures provide freeze protection in HVAC closed loop heating and cooling systems. To convert results to ppm propylene glycol, multiply by 2. This test requires much less time to perform and involves fewer manipulations than the standard chromotropic acid procedure. Further, a recent RCT in children by DiNardo et al (2) suggests that a non-PEG bowel prep may be a good alternative and safe approach for your patient. This is a colorimetric method for detecting trace amounts of glycol in lubricating oils. This article brings the subject of glycol testing in the oil analysis lab into the spotlight by describing the latest laboratory techniques for detecting and measuring its concentration plus tips for troubleshooting. The glycol concentration test in the drilling mud can be determined using a Refractometer, which measures the refraction of light through a liquid, since the amount of refraction will depend on the concentration of the fluid. The procedure requires the preparation of a calibration curve so that refraction readings can be converted into glycol concentrations. Ethylene glycol and other 1,2 glycols are determined by a two step reaction: Step 1: Glycol is oxidized to two carbonyl groups under acidic conditions. The Glycol Refractometer offers a convenient, fast and accurate way for testing / analyzing the glycol concentration of engine coolants and other anti-freeze solutions. Furthermore, the analytical method is suitable for monitoring compliance with the peak limit (short‐term exposure limits). For example, if levels of SARS … $21.99 $ 21. OSHA Regulations, 29 CFR . Concentration can be easily and accurately checked using a handheld refractometer. Chemical Services. 7. Ethers) UNSPSC Code. The process most commonly depends on the use of water-soluble chemicals known as alkylamines, or simply amines. Propylene Glycol Concentration Testing Propylene concentration cannot be tested with a conventional anti-freeze tester! ICS Code. They are used with various corrosion inhibitors to protect metal surfaces in cooling water systems. The float type meters were designed to be used with propylene glycol based anti-freeze. Test results are expressed as ppm (mg/L) ethylene glycol. Heat Transfer Fluids | Inhibited Glycol. Skin testing has been described by Wylon et al (1). The potential exists for the glycol concentration to be less than design. To convert results to ppm propylene glycol, multiply by 2. How Glycol is Formulated and Used. Typically a 50 per cent concentration of glycol will give you freeze protection down to Glycol Correction Factors All Heat exchangers experience a capacity loss when the fluid is a higher specific gravity than water.Glycols are heavy, syrup like fluids at full concentration, and become thinner when mixed with water. or accounts needed. This cutting-edge department formulates innovative, premium, inhibited glycols and offers incomparable technical knowledge and delivery service. “Solar water heating systems that use an antifreeze solution (propylene glycol or ethylene glycol) as a heat-transfer fluid have effective freeze protection as long as the proper antifreeze concentration is maintained,” said Energy.gov’s website. “Antifreeze fluids degrade over time and normally should be changed every 3-5 years. When the glycol strength is diluted and below the recommended concentration, it reduces the potency of corrosion inhibitors and can lead to leaks, fouling or blockages. 1. Lead by the experience of an ASTM Fellow Chemist, our original department has top tier products and personnel eager to cater to your specific needs. Perhaps the best known quick test for glycol is the Schiff’s reagent method (ASTM D2982). The reason for this "split" in the readings is due to the specific gravity of the two coolants. Most quality instruments will test glycol concentrations from 0 to 55% directly, are portable, and require no complicated adjustments for temperature. In a system with diluted glycol, we can see an undesired performance, a reduction of corrosion inhibitors, and (for colder climates) a reduction in freeze/burst protection. Weight: 250g. UNSPSC Code … In geothermal heating/cooling systems, ethylene glycol is the fluid that transports heat through the use of a geothermal heat pump. The specific gravity can be obtained by dividing the density of the glycol or glycol-water solution by the density of water. It is a traditional analog refractometer with scales for measuring both ethylene glycol (EG) and propylene glycol (PG) freeze points. Although the graphs below show the densities of glycols and glycol-water solutions, it may sometimes be desirable to know the specific gravities at certain temperatures. Figure 2-26 shows that a greater dew point depression is easier to achieve by increasing the glycol concentration rate. Last edited: Jul 1, 2014. Durable and built to last. Minimum division: 0.2% Brix. Petrochemical plants, refineries, and others rely on amine gas scrubbing or sweetening to remove acid gasses, such as hydrogen sulfide (H2S) and carbon dioxide (CO2). Why not use automotive antifreeze? A quick and accurate way to measure the glycol concentration in a HVAC or mechanical system is through a hand-held refractometer. Now is the perfect time to test the glycol concentration in your chilled water systems. Multiple testing methods and laboratory workflows are used to quantify SARS-CoV-2 in wastewater across the United States. The first is the MISCO 7084VP+ Glycol & Battery Tester. You can choose a scale for TEG percent by concentration or TEG percent water. 4.5 out of 5 stars 55. The normal operating level in a standard dehydrator is 3 gallons of glycol per pound of water removed (Range 2-7). Allergy Asthma Clin Immunol 12 (2016): 67. Our TDI (and all other VW's) use ethylene glycol type anti-freeze. Refrigeration units and engine cooling systems use glycol in concentrations up to 60% v/v to maintain coolant fluidity at low temperatures. WaterWorks Propylene Glycol Check is said to be the world’s first visual test strip that measures propylene glycol levels. The inhibitors in automotive antifreeze are not designed for extended service and cannot be replenished. Based on the levels of SARS-CoV-2 in wastewater, methods can be adapted to higher or lower detection limits as needed. Correcting Glycol Concentration November 9, 2015 / in Blog , Coolant Testing / by POLARIS Laboratories Proper glycol levels in coolants have become necessary to control an adequate boil point in today’s high-temperature engines. 2. Laboratory controls can ensure that results are comparable by accounting for method performance and data quality. 3-in-1 Antifreeze Tester in Fahrenheit Scale for Checking Freezing Point and Concentration of Ethylene Glycol or Propylene Glycol Based Automobile Antifreeze Coolant, Also for Battery Acid Condition. Is there a simple and inexpensive way to check my glycol concentration? Dilute the sample for higher ranges. Measures 1 to 15 ppm as Ethylene Glycol. method of testing for solutions concentration. Other Document. Concentration Testing. The oil contaminate should not be a problem because the refractometer only measures in the parts per thousand (ppt) range, not in parts per million. Testing initial amine or glycol concentration is essential to ensure optimal fluid properties. E2409 Test Method for Glycol Impurities in Mono-, Di-, Tri- and Tetraethylene Glycol and in Mono- and Dipropylene Glycol(Gas Chromatographic Method) E2679 Test Method for Acidity in Mono-, Di-, Tri- and Tetraethylene Glycol byNon-Aqueous Potentiometric Titration. The extraction and desorption efficiencies of propylene glycol were determined by liquid-spiking the 13-mm glass fiber filters and also an amount of XAD-7 adsorbent equal to the adsorbing section (270 mg) of an OVS-7 tube with the analyte at 0.1 to 2 times the target concentration. Interestingly, the freezing point of a water-glycol mix is much lower than water or glycol individually. How much glycol is needed? Wylon, K., S. Dolle, and M. Worm. However, the mixed solution of water-glycol will be thicker, heavier, than the water alone was. System concentration should not vary significantly from test to test. Online retailer of Dow® Inhibited Propylene and Ethylene Glycol. No order mins. ICS Number Code 71.080.60 (Alcohols. Specifications: Measuring range: 0-32% Brix.