Free quotations · Genuine products · Delivery across Thailand and worldwide
Free quotations · Genuine products · Delivery across Thailand and worldwide
Product code: MX-12521
The HI84500-60 acid reagent is necessary to lower the pH of the wine sample before a titration can be performed for either free or total sulfur dioxide. The adjustment of the wine sample with 5 mL of the acidic reagent ensures the sample is at the correct pH.
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The HI84500-60 acid reagent is necessary to lower the pH of the wine sample before a titration can be performed for either free or total sulfur dioxide. The adjustment of the wine sample with 5 mL of the acidic reagent ensures the sample is at the correct pH. The addition of HI84500-62 stabilizing powder is also added prior to performing the titration. The HI3148B ORP electrode is used to detect the endpoint for both the low (1.0 to 40.0 ppm of SO2) and high (30 to 400 ppm of SO2) ranges. The HI84500 can be used with all wines, including red, which are difficult to test using traditional methods due to the difficulty to observe a distinctive color change when the endpoint is reached. The HI84500 determines the free and total sulfur dioxide concentration in wine using the Ripper method. Excess iodide is added to the wine sample and reacts with the iodate titrant to produce iodine: IO3- + 5I- + 6H+ ? 3I2 + 3H2O The iodine produced reacts with sulfur dioxide in the wine according to the redox reaction below: H2SO3 + I2 ? H2SO4 + 2HI Replacement reagents required to operate the HI84500 include: Low Range - 1.0 to 40.0 ppm SO2 High Range - 30 to 400 ppm SO2 Pump calibration standard HI84500-55 HI84500-55 Titrant solution HI84500-50 HI84500-51 Acid reagent HI84500-60 HI84500-60 Alkaline reagent (Total SO2)
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
MX-12277
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.
