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Viewing Page 7 of 80
(800 results)
Ammonium Oxalate 1-Hyd ACS, 500 g
Item #:
RIC/RDCA0460-500B1
Supplier #: RDCA0460-500B1
Supplier #: RDCA0460-500B1
Ammonium Oxalate Monohydrate ACS Reagent Grade Ricca Chemical; 500g; Poly wht WM; CAS: 6009-70-7 (Ammonium Oxalate); 1/EA Exact Match RDCA0460500
Ammonium CitrateDibasic ACS Rgnt,98%
Item #:
SIG/247561-2.5KG
Supplier #: 247561-2.5KG
Supplier #: 247561-2.5KG
SIGMA-ALDRICH CORPORATION Part No. 247561-2.5KG
ACS reagent, 98% Synonym(s): Ammonium hydrogencitrate; Citric acid ammonium salt; Diammonium hydrogen citrate Empirical Formula: C6H14N2O7 Formula Weight: 226.18 Linear Formula: HOC(CO2H)(CH2CO2NH4)2 MDL Number: MFCD00013068 Purity: 98%; 98.0-103.0% (ACS specification) Beilstein Registry Number: 4925760 RTECS No.: GE7545000 RIDADR: UN 3077 9 / PGIII
ACS reagent, 98% Synonym(s): Ammonium hydrogencitrate; Citric acid ammonium salt; Diammonium hydrogen citrate Empirical Formula: C6H14N2O7 Formula Weight: 226.18 Linear Formula: HOC(CO2H)(CH2CO2NH4)2 MDL Number: MFCD00013068 Purity: 98%; 98.0-103.0% (ACS specification) Beilstein Registry Number: 4925760 RTECS No.: GE7545000 RIDADR: UN 3077 9 / PGIII
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.
Aquastar Combimethanol 1L
Item #:
EMS/1.88009.1045
Supplier #: 1.88009.1045
Supplier #: 1.88009.1045
CombiMethanol; 99.8% min; Clear; EMD Millipore; AQUASTAR; 1L; GL45 glass bottle; F.W.: 32.04; CH3OH; CAS: 67-56-1; 1/EA Exact Match M1880091045 EM1.88009.1045
Acetic Acid Glacial ACS 99.7% 2.5L
Item #:
EMS/AX0073-9
Supplier #: AX0073-9
Supplier #: AX0073-9
Acetic Acid; ACS EMD Chemicals; 2.5L; Glass Bottle; F.W. 60.05; CH3COOH; 6/CS Exact Match MAX00739 EMD-AX0073-9
Acetic Acid Omnitrace 2.5L
Item #:
EMS/AX0077-2
Supplier #: AX0077-2
Supplier #: AX0077-2
Acetic Acid, OmniTrace; 2.5L; F.W. 60.05; 1/EA Exact Match MAX00772 EM-AX0077-2
ACETONE OMNISOLV HRGC 4L
Item #:
EMS/AX0110-1
Supplier #: AX0110-1
Supplier #: AX0110-1
HR-GC Acetone; 99.7% min; Clear liquid, free from particulates; EMD; OmniSolv; 4L; Glass bottle; Dimethyl Ketone; F.W.: 58.08; CH3COCH3; CAS: 67-64-1; 1/EA Exact Match MAX01101 EM-AX0110-1
Acetonitrile HPLC Grade 4L
Item #:
EMS/AX0145P-1
Supplier #: AX0145P-1
Supplier #: AX0145P-1
Acetonitrile; EMD Chemicals; 4L; Poly Coated Glass Bottle; F.W.: 41.05; CH3CN; 1/EA Exact Match MAX0145P1 EM-AX0145P-1
Ammonium Bifluoride 12kg Poly Pail
Item #:
EMS/AX1235-5
Supplier #: AX1235-5
Supplier #: AX1235-5
Ammonium Bifluoride Ammonium hydrogen fluoride Exact Match EM-AX1235-5
