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Viewing Page 74 of 80
(800 results)
Copper Tetrammine, Ammoniacal, 250 mL
Item #:
RIC/R2370000-250A
Supplier #: R2370000-250A
Supplier #: R2370000-250A
Copper Tetrammine, Ammoniacal Solution, Clear, blue liquid; Ricca Chemical; 250mL; Poly natural; CAS: 7758-99-8 (Copper Sulfate Pentahydrate); 1336-21-6 (Ammonium Hydroxide); 1/EA Exact Match R2370000250
Anisole, ReagentPlus 99%, 100mL
Item #:
SIG/123226-100ML
Supplier #: 123226-100ML
Supplier #: 123226-100ML
SIGMA-ALDRICH CORPORATION Part No. 123226-100ML
Synonyms: Methoxybenzene; Methyl phenyl ether Formula: CH3OC6H5 Formula Weight: 108.14
CAS No.: 100-66-3 Purity: 99% Density: 0.995 g/mL at 25 ÝC(lit.) Legal Information: ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC Packaging: 1, 4 L in glass bottle Packaging: 100 mL in glass bottle Packaging: 20 L in steel drum
Synonyms: Methoxybenzene; Methyl phenyl ether Formula: CH3OC6H5 Formula Weight: 108.14
CAS No.: 100-66-3 Purity: 99% Density: 0.995 g/mL at 25 ÝC(lit.) Legal Information: ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC Packaging: 1, 4 L in glass bottle Packaging: 100 mL in glass bottle Packaging: 20 L in steel drum
Ammonium Chloride ACS =99.5% 12KG
Item #:
SIG/213330-12KG
Supplier #: 213330-12KG
Supplier #: 213330-12KG
SIGMA-ALDRICH CORPORATION Part No. 213330-12KG
ACS reagent, ≥99.5% Synonym(s): Salmiac Empirical Formula: H4ClN Formula Weight: 53.49 Linear Formula: NH4Cl MDL Number: MFCD00011420 Purity: ≥99.5% Melting Point: 340 °C (subl.)(lit.) Beilstein Registry Number: 4371014 RTECS No.: BP4550000 RIDADR: UN 3077 9 / PGIII
ACS reagent, ≥99.5% Synonym(s): Salmiac Empirical Formula: H4ClN Formula Weight: 53.49 Linear Formula: NH4Cl MDL Number: MFCD00011420 Purity: ≥99.5% Melting Point: 340 °C (subl.)(lit.) Beilstein Registry Number: 4371014 RTECS No.: BP4550000 RIDADR: UN 3077 9 / PGIII
Ammonium NItrate ACS reagent, =98%,2.5KG
Item #:
SIG/221244-2.5KG
Supplier #: 221244-2.5KG
Supplier #: 221244-2.5KG
SIGMA-ALDRICH CORPORATION Part No. 221244-2.5KG
ACS reagent, ≥98% Empirical Formula: H4N2O3 Formula Weight: 80.04 Linear Formula: NH4NO3 MDL Number: MFCD00011425 Purity: ≥98% Boiling Point: 210 °C(lit.) Melting Point: 169 °C(lit.) RTECS No.: BR9050000 RIDADR: UN 1942 5.1 / PGIII
ACS reagent, ≥98% Empirical Formula: H4N2O3 Formula Weight: 80.04 Linear Formula: NH4NO3 MDL Number: MFCD00011425 Purity: ≥98% Boiling Point: 210 °C(lit.) Melting Point: 169 °C(lit.) RTECS No.: BR9050000 RIDADR: UN 1942 5.1 / PGIII
Ammonium Sulfide 20% Aqueous Solution
Item #:
SIG/A1952-500ML
Supplier #: A1952-500ML
Supplier #: A1952-500ML
SIGMA-ALDRICH CORPORATION Part No. A1952-500ML
Density (g/cm3): 1.14 Flash Point (ÝC): 32 ÝC Molecular weight: 68.14 Molecular formula: (NH4)2S UN Number: UN2683
Density (g/cm3): 1.14 Flash Point (ÝC): 32 ÝC Molecular weight: 68.14 Molecular formula: (NH4)2S UN Number: UN2683
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.
Antimony Standard 1,000ppm 125mL
Item #:
TMS/C996M58
Supplier #: C996M58
Supplier #: C996M58
Agilent Technologies, Inc.
Mfg Item # : ICP-051
1 Analyte(s) @ 1000 Ýg/mL in water with dilute nitric and trace tartaric acids
Mfg Item # : ICP-051
1 Analyte(s) @ 1000 Ýg/mL in water with dilute nitric and trace tartaric acids
Auxiliary Objective for K-700: 2X
Item #:
VAN/19000-286
Supplier #: 19000-286
Supplier #: 19000-286
MOTIC INSTRUMENTS USA, INC.
Mfg Item # : 1101001700712
2.0x Auxiliary Objective For K-700 Series Stereo Microscopes (19000-208, -210).
Exact Match: 19000-286
Mfg Item # : 1101001700712
2.0x Auxiliary Objective For K-700 Series Stereo Microscopes (19000-208, -210).
Exact Match: 19000-286
