Free quotations · Genuine products · Delivery across Thailand and worldwide
Free quotations · Genuine products · Delivery across Thailand and worldwide
ORP standard solutions allow you to test the precision of ORP electrodes. For example, by immersing the electrode in HI 7020 solution, you should read within the 200 to 275 mV range (@20°C/68°F). If the reading is outside the indicated interval, clean and condition your ORP electrode in HANNA® pretreatment solution.
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ORP (Oxidation Reduction Potential) electrodes are used to measure a chemical reaction in which one species is being oxidized and another is being reduced. The loss of electrons by an element or compound is known as oxidation reaction while the gaining of electrons by an element or compound is known as reduction reaction. For example, plating companies that have hexavalent chromium (Cr6+) in their wastewater must reduce it to a safer trivalent chromium (Cr3+) form. This reduction reaction occurs in the presence of a strong reductant such as sodium metabisulfite. The addition of the reductant must be measured with an ORP electrode to ensure that there is an adequate reducing potential. Using the HI7091L reducing pretreatment solution prior to taking a measurement provides for a faster response time in a reducing environment. To use, soak the ORP electrode in the pretreatment solution for 15 minutes prior to use. As a general rule, if the mV reading corresponding to the pH measurement is lower than the value in the table below the reducing pretreatment solution (HI7091) is used. If the mV reading corresponding to the pH measurement is higher than the value in the table below then the oxidizing pretreatment (HI7092) should be used.
MX-10828
Microscope slides are high-quality clear glass sheets, very clean, for viewing samples under a microscope. They are packed in a vacuum box with paper between each slide to preserve quality, and have smooth rounded edges for safe handling.
Axygen
MX-10805
Pipette tips, 10 µl; Made of Polypropylene (PP) plastic, Certified RNase, DNase, and endotoxin free; Pack size 1000 pieces per pack, non-sterile
Axygen
MX-10806
Pipette tips, 20 µl; Made of Polypropylene (PP) plastic, Certified RNase, DNase, and endotoxin free; Pack size 1000 pieces per pack, non-sterile
Hanna
HI7087L is a premium quality 0.23 g/L Na+ (sodium) standard solution produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances, and Class A glassware in a temperature controlled environment monitored with certified thermometers.
