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Viewing Page 5 of 80
(800 results)
Ammonia(as Nitrogen)Standard, 500mL
Item #:
LCH/LC179401
Supplier #: LC179401
Supplier #: LC179401
Labchem, Inc.
Mfg Item # : LC179401
Product Size: 500ML
CAS Number: 12125-02-9 Shelf Life (Months): 24 Container: Poly Bottle Traceable to NIST: No Refrigerated? : No DEA Registration Required? : No Hazard? : No Hazard Class: (none specified) Hazard Subrisk: (none specified) UN Number: (none specified) Packaging Group: (none specified) Compendia: References
Mfg Item # : LC179401
Product Size: 500ML
CAS Number: 12125-02-9 Shelf Life (Months): 24 Container: Poly Bottle Traceable to NIST: No Refrigerated? : No DEA Registration Required? : No Hazard? : No Hazard Class: (none specified) Hazard Subrisk: (none specified) UN Number: (none specified) Packaging Group: (none specified) Compendia: References
Ammonium Standard 1000ppm as N
Item #:
ORN/951007
Supplier #: 951007
Supplier #: 951007
ORION Ammonia Calibration Standard 1000ppm as N. Supplied in 475mL bottles. Exact Match 34184-673
Ammonia pH Adjusting ISA 475mL
Item #:
ORN/951211
Supplier #: 951211
Supplier #: 951211
Solution, Ionic strength adjustor; ISE pH adjusting; For ammonia standards, samples; With pH indicating blue dye for instant verification; Prevents complexation, inhibits formation of metal hydroxides; 1 pt. (475mL); 1/EA Exact Match 13641883 34185-177
Ammonia Std, 1000 ppm NH3, 120 mL
Item #:
RIC/615-4
Supplier #: 615-4
Supplier #: 615-4
Ammonia Standard, 1000ppm NH3, (822 ppm N); Ricca Chemcial; 120mL, Poly Bottle; CAS: 12125-02-9 (Ammonium Chloride); 1/EA Exact Match 6154
Ammonia CHEMets® Kit, 0-1 & 1-10
Item #:
TMS/9866E05
Supplier #: 9866E05
Supplier #: 9866E05
CHEMetrics Part No. K-1510
Low-level ammonia nitrogen may be naturally present in water as a result of the biological decay of plant and animal matter. Higher concentrations in surface waters can indicate contamination from waste treatment facilities, raw sewage, industrial effluents (particularly from petroleum refineries), or fertilizer runoff. Excessive ammonia concentrations are toxic to aquatic life. The Direct Nesslerization Method Reference: ASTM D 1426-08, Ammonia Nitrogen in Water, Test Method A. APHA Standard Methods, 18th ed., Method 4500-NH3 C - 1988. The test kits employing the well-established Nessler reagent* to determine ammonia concentrations are applicable to drinking water, clean surface water, good-quality nitrified wastewater effluent, and seawater. In some waters, calcium and magnesium concentrations can cause cloudiness of the reagent. Adding a few drops of stabilizer solution (Rochelle Salt) will prevent this cloudiness. References recommend distilling samples prior to analysis. Results are expressed as ppm (mg/L) ammonia-nitrogen, NH3-N. Shelf-life: although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. We recommend stocking quantities of CHEMets® and VACUettes® ampoules that will be used within five months. A two-month supply of Vacu-vials ampoules is suggested. Refrigeration will dramatically extend the shelf-life of these products. Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Stabilizer Solutions, 25 mL sample cup, 1.0 mL syringe, and instructions.
Low-level ammonia nitrogen may be naturally present in water as a result of the biological decay of plant and animal matter. Higher concentrations in surface waters can indicate contamination from waste treatment facilities, raw sewage, industrial effluents (particularly from petroleum refineries), or fertilizer runoff. Excessive ammonia concentrations are toxic to aquatic life. The Direct Nesslerization Method Reference: ASTM D 1426-08, Ammonia Nitrogen in Water, Test Method A. APHA Standard Methods, 18th ed., Method 4500-NH3 C - 1988. The test kits employing the well-established Nessler reagent* to determine ammonia concentrations are applicable to drinking water, clean surface water, good-quality nitrified wastewater effluent, and seawater. In some waters, calcium and magnesium concentrations can cause cloudiness of the reagent. Adding a few drops of stabilizer solution (Rochelle Salt) will prevent this cloudiness. References recommend distilling samples prior to analysis. Results are expressed as ppm (mg/L) ammonia-nitrogen, NH3-N. Shelf-life: although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. We recommend stocking quantities of CHEMets® and VACUettes® ampoules that will be used within five months. A two-month supply of Vacu-vials ampoules is suggested. Refrigeration will dramatically extend the shelf-life of these products. Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Stabilizer Solutions, 25 mL sample cup, 1.0 mL syringe, and instructions.
Acetone ACS Steel Can 19L
Item #:
VAN/BDH1101-19L
Supplier #: BDH1101-19L
Supplier #: BDH1101-19L
VWR International BDH1101-19L
BDH Acetone 19L Can ACS Grade, BDH Brand.
BDH Acetone 19L Can ACS Grade, BDH Brand.
Acetic Acid, ARISTAR® USP/NF, 2.5L
Item #:
VAN/BDH3094-2.5LG
Supplier #: BDH3094-2.5LG
Supplier #: BDH3094-2.5LG
VWR International BDH3094-2.5LG
BDH Acetic Acid, glacial ACS/USP/FCC. Packaged in glass bottle. CAS Number: 64-19-7. Size: 2.5L.
BDH Acetic Acid, glacial ACS/USP/FCC. Packaged in glass bottle. CAS Number: 64-19-7. Size: 2.5L.
