standards
Meeting regulations in any industry, standards are essential for periodically checking the accuracy of equipment pieces. By comparing against the known values, output readings detect errors present and inform personnel adjustments are required. Once the settings of the manual or automatic instruments have returned to zero, the reestablished conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.
Conductivity standards, KCl, referenced at 25 °C, for conductivity measurement
Supplier: METTLER TOLEDO
Conductivity standard, 0,01 mol/l KCl, 1413 µS/cm, 参考温度: 25 °C
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Sodium Chloride Standard Solution, 491 mg/L NaCl (1000 µS/cm)
Supplier: HACH
Standard solution for standardisation and accuracy check in conductivity measurements.
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Iron standard solution
Supplier: HACH
For accuracy checks in iron determinations.
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Conductivity standard 1413 µS/cm (25°C; 0,01 mol/L; KCl) for conductivity measurement
Supplier: SI ANALYTICS
Conductivity standard 1413 µS/cm (0,01 mol/l; KCl), 参考温度: 25 °C
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Colour standards
Supplier: HACH
For accuracy checks in colour determinations.
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Conductivity standard 147 µS/cm (25 °C; 0,001 mol/L; KCl) for conductivity measurement
Supplier: SI ANALYTICS
Conductivity standard 147 µS/cm (0,001 mol/l; KCl), 参考温度: 25 °C
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Wastewater inorganics quality control standard
Supplier: HACH
These mixed standards are ready to use, no dilutions are required. They contain ammonia nitrogen, nitrate nitrogen, COD, phosphate, sulphate and TOC.
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Standard solutions for analytical quality assurance, Supelco®
Supplier: MERCK MILLIPORE
The standard solutions offered below can be adjusted to a final concentration for the measurement range of a test system by dilution. In addition, these standards can be used to prepare spiking solutions for the standard addition procedure. They provide an economic and simple method of analytical quality control.
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Nitrogen-ammonia standard solutions
Supplier: HACH
For accuracy checks in ammonia nitrogen determinations.
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Chlorine standard solution
Supplier: HACH
For accuracy checks in chlorine determinations. Lot specific concentration displayed on label.
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Standard solution, detergent
Supplier: HACH
For accuracy checks in detergents (surfactants) determinations.
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BOD standard solutions (NIST)
Supplier: HACH
For accuracy checks in Biochemical Oxygen Demand (BOD) determinations.
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Potassium Chloride Standard Solution
Supplier: HACH
For calibrations/accuracy checks on conductivity/salinity meters.
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Gelex secondary standards kit for 2100 series turbidity meters
Supplier: HACH
Gelex secondary standards kit for 2100P and 2100Q series portable turbidimeters (includes 1 sealed vial each for 0 to 10 NTU, 10 to 100 NTU, 100 to 1000 NTU).
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Polystyrene Test Film - MIR
Supplier: PERKIN ELMER GC INSTRUMENTS
This test film is an easy-to-use standard to check frequency, accuracy and any changes.
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Quaternary ammonium compound (QAC) standard solution
Supplier: HACH
For accuracy checks in quaternary ammonium compound (QAC) determinations.