"Ammonium Chloride"
Crystal violet
Supplier: Abcam
Cation-based violet dye. Interacts with aqueous KI - I₂ during Gram staining to produce a precipitate. Histological stain for Gram-positive bacteria and DNA. Shows antibacterial, antifungal, and anthelmintic effects in vivo.
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Benzalkonium chloride solution 50% NF
Supplier: Spectrum Chemical
Benzalkonium Chloride Solution, 50 Percent, NF is used in the pharmaceutical industry as an antimicrobial preservative, antiseptic, disinfectant, solubilising agent, and wetting agent. Spectrum Chemical NF products are manufactured, packaged and stored under current Good Manufacturing Practices (cGMP) per 21CFR part 211 in FDA registered and inspected facilities.
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Tetrabutylammonium chloride
Supplier: COMBI-BLOCKS
Tetrabutylammonium chloride
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Tetrabutylammonium chloride 50% in aqueous solution
Supplier: Molekula
Tetrabutylammonium chloride 50% in aqueous solution
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VWR®, Total Hardness Indicator, Tablets for Hardness of Water Determinations, Avantor
Supplier: VWR Chemicals
Indicator tablets for determination of water hardness by titration with EDTA.
Specifications
Minimum weight: ≥ 0.20 g
Maximum weight: ≤ 0.23 g
Disintegration time (at 25°C): ≤ 150 s
Application test: conforms
The tablets are dissolved in 100 ml of the water sample to be tested, which has been buffered at pH 10 with 1 ml of Ammonia/ Ammonium chloride buffer solution, and then titrated with EDTA solution (0,01 M) till the sample turns from red to blue.
Total hardness in mg/l = 10×ml of titrant used.
Control samples of calcium carbonate should be used to calibrate the method.
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di-Ammonium oxalate monohydrate ≥99.0%, powder ACS
Supplier: MP Biomedicals
Chloride ≤0,002% Iron ≤2 ppm sulphate ≤0,002%
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Crystal violet, Sigma-Aldrich®
Supplier: Merck
Crystal violet, Sigma-Aldrich®
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Crystal violet, Sigma-Aldrich®
Supplier: Merck
Crystal violet, Sigma-Aldrich®
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Crystal violet, Sigma-Aldrich®
Supplier: Merck
Crystal violet, Sigma-Aldrich®
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Crystal violet 90+% ACS
Supplier: Thermo Fisher Scientific
Crystal violet 90+% ACS
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Anti-IGG fraction to beta-galactosidase goat polyclonal antibody
Supplier: MP Biomedicals
Goat IgG fraction to beta-Galactosidase is used in enzyme Immunoassays, fluorescein Immunoassays, blots, cell or tissue immunostaining. Gives sharp precipitation lines in IEP and ID techniques.
The antibody is produced by hyperimmunizing goats with the enzyme beta-galactosidase from Escherichia coli. The IgG fraction is prepared by delipidation, ammonium sulfate fractionation, and anion exchange chromatography, and is further purified by solid-phase absorption to remove antibodies to non-beta-galactosidase E. coli proteins. The product is dialyzed into 0.02M sodium phosphate, 0.14M sodium chloride, pH 7.3, adjusted to standard titer, filtered through a 0.22 μm filter, and vialed. No preservative is added.
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Anti-HRBC Rabbit Polyclonal Antibody
Supplier: MP Biomedicals
The IgG fraction is prepared from the specific rabbit antiserum by delipidation, ammonium sulfate fractionation and anion exchange chromatography. The resulting IgG fraction is dialyzed into 0.02M sodium phosphate, 0.14M sodium chloride, pH 7.3, adjusted to standard titer, filtered through a 0.22 µm filter, vialed and lyophilized. No preservative is added.
The total protein is measured using the Biuret procedure, with bovine albumin as a standard. Hemagglutination titer is standardized with an in-house control by measurement of agglutination end-point with 10% human red blood cells. Each IgG fraction is tested for purity at a minimum of 40 mg/ml using immunoelectrophoresis. The product is mostly rabbit IgG; no trace of albumin is detected.
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Standards, calibration for LCK cuvettes, Addista
Supplier: Hach
System for Analytical Quality Assurance (AQA), consisting of one combined standard/spiking solution and two round robin test solutions.