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(163 results)
Ammonium Chloride 98+% 1kg
Item #:
VAN/AAAA15000-0B
Supplier #: AAAA15000-0B
Supplier #: AAAA15000-0B
Alfa Aesar
Mfg Item # : A15000-0B
AMMONIUM CHLORIDE 98% 1KG
Exact Match: AAAA15000-0B
Mfg Item # : A15000-0B
AMMONIUM CHLORIDE 98% 1KG
Exact Match: AAAA15000-0B
Autofil 250ml 0.22µm Full Assembly
Item #:
ROU/1101-RLS
Supplier #: 1101-RLS
Supplier #: 1101-RLS
Foxx Life Sciences
Mfg Item # : 1101-RLS
Foxx Life Sciences’ Autofil Bottle-Top Filtration Systems are disposable, sterile, vacuum operated systems for the sterile preparation of buffers, tissue culture media, microbiological media, and other biological fluids. Systems are available with asymmetric 0.22 µm (sterilization grade) and 0.45 µm (clarification grade) PES membranes. The complete system is composed of a polystyrene filter funnel and receiver bottle, a SECUREgrasp cap, and a vacuum hose adapter. Systems with 15 mL and 50 mL polypropylene centrifuge tubes are also available. Filtration funnels are compatible with the patented Autofil pedestal, a cradle ring for use with existing lab stands, and vacuum hose adapters. All components are USP Class VI, FDA grade, and are conveniently sold gamma-sterilized. Quick-Connect pedestal offers one-time vacuum connection and one-handed operation Conveniently sold pre-sterilized Autofil is available as a complete system or as a bottle-top filter
Mfg Item # : 1101-RLS
Foxx Life Sciences’ Autofil Bottle-Top Filtration Systems are disposable, sterile, vacuum operated systems for the sterile preparation of buffers, tissue culture media, microbiological media, and other biological fluids. Systems are available with asymmetric 0.22 µm (sterilization grade) and 0.45 µm (clarification grade) PES membranes. The complete system is composed of a polystyrene filter funnel and receiver bottle, a SECUREgrasp cap, and a vacuum hose adapter. Systems with 15 mL and 50 mL polypropylene centrifuge tubes are also available. Filtration funnels are compatible with the patented Autofil pedestal, a cradle ring for use with existing lab stands, and vacuum hose adapters. All components are USP Class VI, FDA grade, and are conveniently sold gamma-sterilized. Quick-Connect pedestal offers one-time vacuum connection and one-handed operation Conveniently sold pre-sterilized Autofil is available as a complete system or as a bottle-top filter
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.
Alkalinity Standard Sol. 0.500N 10mL
Item #:
HCH/1427810
Supplier #: 1427810
Supplier #: 1427810
Hach Company
Mfg Item # : 1427810
If you have ever questioned the result of an analytical test, you'll immediately appreciate the value of using standard solutions. These solutions contain a defined concentration of analyte, allowing you to quickly verify that instrument operation, reagent performance, and variations in operator technique are within your program values. Standard Methods recommends using solutions of known concentration in place of your sample 5% of the time. Through control charting, verification of calibration curves, standard additions (spikes), and troubleshooting isolated problems, standard solutions are an essential tool in significantly increasing confidence in your laboratory process and test results.
Mfg Item # : 1427810
If you have ever questioned the result of an analytical test, you'll immediately appreciate the value of using standard solutions. These solutions contain a defined concentration of analyte, allowing you to quickly verify that instrument operation, reagent performance, and variations in operator technique are within your program values. Standard Methods recommends using solutions of known concentration in place of your sample 5% of the time. Through control charting, verification of calibration curves, standard additions (spikes), and troubleshooting isolated problems, standard solutions are an essential tool in significantly increasing confidence in your laboratory process and test results.
Acetonitrile, HPLC Plus, =99.9% CS/4
Item #:
SIG/34998-4X4L
Supplier #: 34998-4X4L
Supplier #: 34998-4X4L
SIGMA-ALDRICH CORPORATION Part No. 34998-4X4L
Synonym(s): ACN; Methyl cyanide Empirical Formula: C2H3N Formula Weight: 41.05 Linear Formula: CH3CN MDL Number: MFCD00001878 Purity: ≥99.9% Boiling Point: 81-82 °C(lit.) Melting Point: −48 °C(lit.) Density: 0.786 g/mL at 25 °C(lit.) Refractive Index: n 20/D 1.344(lit.) Beilstein Registry Number: 741857 RTECS No.: AL7700000 RIDADR: UN 1648 3 / PGII
Synonym(s): ACN; Methyl cyanide Empirical Formula: C2H3N Formula Weight: 41.05 Linear Formula: CH3CN MDL Number: MFCD00001878 Purity: ≥99.9% Boiling Point: 81-82 °C(lit.) Melting Point: −48 °C(lit.) Density: 0.786 g/mL at 25 °C(lit.) Refractive Index: n 20/D 1.344(lit.) Beilstein Registry Number: 741857 RTECS No.: AL7700000 RIDADR: UN 1648 3 / PGII
Ammonia Refill Packs 0-1 and 1-10ppm
Item #:
VAN/CXR-1501
Supplier #: CXR-1501
Supplier #: CXR-1501
30 ampules. Temperature sensitive and has specific temperature and storage requirements for shipping/delivery.
Ammonium Hydroxide, 0.5n (0.5M), 500mL
Item #:
LCH/LC110701
Supplier #: LC110701
Supplier #: LC110701
Ammonium Hydroxide, 0.5n (0.5M), for Phenols 500mL CAS#1336-21-6
Ammonium Hydroxide, 0.5n (0.5M), 4L
Item #:
LCH/LC110704
Supplier #: LC110704
Supplier #: LC110704
Ammonium Hydroxide, 0.5n (0.5M), for Phenols 4L CAS#1336-21-6
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