Standard for calibrating and checking accuracy of ORP/Redox electrodes. The ZoBell's ORP/Redox Standard Solution exhibits temperature correlation between 0 - 30°C. The standard value is dependent on the reference electrode type.

For standardization and accuracy checks in conductivity measurements Conductivity standard solution,1000 µS/cm ±10 µS/cm at 25°C, 491 mg/L ±2.5 mg/L as Sodium Chloride (NaCl), (1 µS/cm ~ 0.5 mg/L TDS), 50 mL pour-top bottle. Traceable to NIST standard…

If you have ever questioned the result of an analytical test, you'll immediately appreciate the value of using standard solutions. These solutions contain a defined concentration of analyte, allowing you to quickly verify that instrument operation, reagent performance, and variations in operator…

If you have ever questioned the result of an analytical test, you'll immediately appreciate the value of using standard solutions. These solutions contain a defined concentration of analyte, allowing you to quickly verify that instrument operation, reagent performance, and variations in operator…

For hydrogen peroxide determination by drop-count titration

S5000 Silica Standard Solution, Silica, 0.5mg/L, 2.9L

For chloride determination by argentometric buret titration.

10 mg/L NH4-N Standard Solution, 2000mL

Thomas No. C791Z40 and C753U42 For alkalinity determination by drop-count titration. 100 mL bottle Thomas No. C753V69 For formaldehyde determination by drop-count titration. 100 mL bottle Thomas No. C753V59 Multi-purpose sulfuric acid standard…

For chloride determination by Digital Titrator argentometric titration. Hach method 8207. Digits x 0.1 = mg/L Cl- in 100 mL sample. Approximately 40-100 tests Accurate results - when and where you need them Fast and Flexible Versatile Economical

Stabilised Formazine reference suspension for the determination of lucidity/opalescence according to European Pharmacopeia 6.0.

Sodium Hydroxide 1.00N, 1L pk/4

For accuracy checks in conductivity measurements. 5.37 g/L as NaCl. 10,000 µS/cm. 500 mL bottle.

StablCal® Turbidity Standards for all Turbidimeters. USEPA accepted for calibration purposes StablCal® Stabilized Formazin Turbidity Standards are true Formazin dilutions developed for use in any turbidimeter Precise, Pre-mixed Formazin Solutions Based on Formazin Primary…

Demineralizer, plastic, portable, with hose. Special faucet adapter, plug, and resin. Used in Model 15-E Water Conditioning Demonstration Kit.

Sodium Thiosulfate Standard Solution, 0.025 N, 1 L

For low range silica determination in visual test kits. Pack of 100 powder pillows

For total exchangeable acidity determination in soils. Used in test kit 2496000.

Soap Solution for Hardness Determination

For carbon dioxide determination by drop-count titration

Standard Cell Solution for Hach pHD Differential pH and ORP Sensors, packaged in resealable 500 mL bottle. Used to replenish standard cell chamber while replacing salt bridge.

1 mg/L NH4-N Standard Solution, 2000 mL

500 platinum-cobalt units

Multi-purpose sodium hydroxide solution for pH adjustment. 50 mL Self-Contained Dropping Bottle

Standard alkaline titrant solution.

For determination of Tannin and Lignin by the Tyrosine method. Hach method 8193.

For sample dechlorination prior to analysis.

For accuracy checks in conductivity measurements. 49 mg/L as NaCl. 100 µS/cm @ 25°C. 500 mL.