500 mL, GFS Chemicals
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1-Methoxy-2-Propanol, 99%
GFS ChemicalsCH3OCH2CH(OH)CH3 CAS#: 107-98-2 F.W.: 90.12 Propyleneglycol methyl ether
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Conductivity Standard, 50,000 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 50,000 +/- 500 uS/cm
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Conductivity Standard, 10,000 uS/cm
GFS ChemicalsMade from potassium chloride. Conductivity 10,000 +/- 100 uS/cm NIST Traceable
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Lanthanum Chloride, Solution, 10%
GFS ChemicalsLaCl3•7H2O CAS#: 10025-84-0 F.W.: 371.37 Suitable for flame enhancement in Atomic Absorption.
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Substitutes for 1612 Vessel solution when moisture is to be determined in ketones. Does not contain methanol.
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Conductivity Standard, 25,000 uS/cm
GFS ChemicalsConductivity 25,000 +/- 200 uS/cm Made from potassium chloride.
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AMCO Clear® Turbidity Standard, 2.0 NTU
GFS ChemicalsTEST Turbidity 2.0 NTU +/- 0.02 Absorbance at 455nm (100mm pathlength) Lot Number of Baseline Material
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In-Spec® UV Standard #8
GFS ChemicalsNIST Traceable, non-toxic reference material for the UV spectrophotometer. Full UV scan reported with a typical absorbance at 300 nm in 10 mm pathlength being approximately 0.253.
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AMCO Clear® Turbidity Standard, 0.5 EBC
GFS ChemicalsTEST Turbidity (Haze) 0.5 EBC +/- 0.05 Absorbance at 455nm (100mm pathlength) Lot Number of Baseline Material
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Formaldehyde Solution, 37% (ACS)
GFS ChemicalsHCHO CAS#: 50-00-0 F.W.: 30.03 NFPA#: 3-2-2 Descriptions: Contains 10-15% methanol as preservative.
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Nitrogen 1,000 ppm Ion Chromatography Standard
GFS Chemicals1000 ppm nitrogen from ammonium chloride, 1220 ppm ammonia. Concentration (as N) 1,000 +/- 10 ug/ml Matrix: Ammonium chloride in water NIST Traceable
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AMCO Clear® Turbidity Standard, 4.0 NTU
GFS ChemicalsTurbidity 4.0 NTU +/- 0.04 Absorbance at 455nm (100mm pathlength) Lot Number of Baseline Material
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For Endress and Hauser, Reagecon Diagnostic and Hach 2100 AN IS turbidimeters. TEST Turbidity (on Hach 2100 AN/IS) 4000 NTU Absorbance at 455 nm (10mm pathlength) 3.26-3.50 Lot Number of Baseline Material
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TEST Turbidity (AQ4500) EPA mode Turbidity (AQ4500) ISO Neph. mode Turbidity (AQ4500) IR Ratio mode Thermo Electron AQ4500 serial number Instrument calibration date Formazin Concentrate (
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AMCO Clear® Turbidity Standard, 0.1 NTU
GFS ChemicalsFor all EPA 180.1 turbidimeters. TEST Turbidity 0.1 NTU +/- 0.02 Absorbance at 455nm (100mm pathlength) Lot Number of Baseline Material
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Sodium Sulfite, Zero Dissolved Oxygen Solution
GFS ChemicalsNa2SO3 CAS#: 7757-83-7 F.W.: 126.04 0 mg/L dissolved oxygen
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AMCO Clear® Turbidity Standard, 200 NTU
GFS ChemicalsTEST Turbidity 200 NTU +/- 2 Absorbance at 455nm (10mm pathlength) Lot Number of Baseline Material
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Benzyl Chloride, 99%
GFS ChemicalsC6H5CH2Cl CAS#: 100-44-7 F.W.: 126.58 Stabilized with propylene oxide.
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Veritas® Hydrochloric Acid, Redistilled, 32-38%
GFS ChemicalsHCl CAS#: 7647-01-0 F.W.: 36.46 Specific Gravity: 1.160 Trace metal grade. Low ppb metal impurities. Note: Results reported at time of bottling in glass. The levels of Al, B, Ca, K, Mg, Mn, Na, and Si will increase over time.
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Hydrogen Peroxide, 50% Solution
GFS ChemicalsH2O2 CAS#: 7722-84-1 F.W.: 34.02 Retest concentration regularly.