Chemical

Description

Buffer tablets with a pH of 6.8 are recommended for the preparation of buffer solutions according to WEISE for the staining of blood smears. These tablets are used to make buffer solutions and pH-buffered staining solutions, specifically phosphate buffer solutions, which are commonly used in hematology. They are also used to dilute staining solutions and rinse stained samples during the staining process.

100 buffer tablets are sufficient for preparing 100 liters of buffer solution, and each solution can remain stable for up to four weeks. The buffer tablets according to WEISE are in vitro diagnostic products that are CE registered.

Description

CAS number: 77-79-2
Chemical Formula: C4H6O2S
Molar Mass: 118.15 g/mol
Synonyms: 2,5-Dihydrothiophene-1,1-dioxide, 3-Sulfolene

CAS no.: 7697-37-2, 10325-94-7
Traceability: Traceable to SRM from NIST Cd(NO₃)₂ in HNO₃ 0.5 mol/l 1000 mg/l Cd Certipur®
Synonym: –
Quality level: MQ300
Product specification and SDS for Cadmium Standard Solution.

Description

Formula: CaCl₂ · 2H₂O

In cell culture laboratory, calcium chloride dihydrate is used as a calcium supplement in DMEM. It can also be used to prepare synthetic brine solution. In addition, it can also be used as a desiccant.

Note:

AR: Analitycal Reagent Grade: Reagents for analytical purpose or research work that need high purity.
CP: Chemically Pure Grade: Reagents for regular practical in its original purity.

CAS no.: 10124-37-5, 7697-37-2
Traceability: Traceable to SRM from NIST Ca(NO₃)₂ in HNO₃ 0.5 mol/l 1000 mg/l Ca Certipur®
Synonym: –
Quality level: MQ300
Product specification and SDS for Calcium Standard Solution.

Description

CAS number: 57-09-0
Chemical Formula: C₁₉H₄₂BrN
Synonyms: Cetrimide, CTAB
Purity: ≥98% by TLC
Contaminants: DNases, proteases, RNases: none detected

Cationic detergent is suitable for the isolation of high molecular weight DNA in plants and other organisms.

Product Specification and MSDS for Cetyltrimethylammonium Bromide for Molecular (Merck).

Description:

CAS number: 9012-76-4
Synonyms: Deacetylated chitin, Poly(D-glucosamine)

General description

Chitosan may be used as a flocculant, in protein precipitation, encapsulating agent and aqueous thickener.

Forms gels with multivalent anions. Gives clear solutions that dry to strong, clear films.

Features and Benefits

Biocompatible, antibacterial and environmentally friendly polyelectrolyte with a variety of applications including water treatment, chromatography, additives for cosmetics, textile treatment for antimicrobial activity, novel fibres for textiles, photographic papers, biodegradable films, biomedical devices, and microcapsule implants for controlled release in drug delivery.

Description

Synonym: Cholesterol Assay Kit

General description

Cholesterol is an important component of mammalian cell membranes where it functions in intracellular transport, cell signalling, and maintaining membrane fluidity. Within the blood, cholesterol circulates as both the free acid and as cholesterol esters. Controlling serum cholesterol has an important therapeutic role as elevated cholesterol levels are associated with the development of atherosclerosis and cardiovascular pathologies. Recent evidence suggests a disturbance of cholesterol homeostasis contributes to the development of a chronic inflammatory state.

Cholesterol is predominantly produced in the liver. Abnormal cholesterol levels are implicated in coronary heart disease. Cholesterol is associated with breast cancer progression or inhibition. Tumour cells are capable of synthesizing their own cholesterol, which aids in cell proliferation. Increased cholesterol level is observed in cancers, especially in prostate cancer. Elevated serum cholesterol is observed in obesity.

Application

Cholesterol Quantitation Kit has been used to measure the total serum cholesterol level.

Suitability

Suitable for use with cell and tissue culture samples, urine, plasma, serum, and other biological samples.

Principle

The Cholesterol Quantitation Kit can also be used to determine the concentration of free cholesterol, cholesteryl esters, or both (total) present in a sample. In this kit, total cholesterol concentration is determined by a coupled enzyme assay, which results in a colorimetric (570 nm)/fluorometric (λ_ex = 535/λ_em = 587 nm) product, proportional to the cholesterol present.

Description

Synonyms: Cobaltous nitrate hexahydrate

Formula: Co(NO₃)₂ · 6H₂O

Cobalt (II) nitrate hexahydrate is a red crystal that is soluble in water and most organic solvent. This chemical has many use including cleaning, metal manufacturing and metal surface treatment.

Note:

AR: Analitycal Reagent Grade: Reagents for analytical purpose or research work that need high purity.
CP: Chemically Pure Grade: Reagents for regular practical in its original purity.

Description

CAS Number : 7553-56-2

Density : 1.19 g/cm3 (20 °C)

One-component reagent for volumetric Karl Fischer titration 1 ml ≙ ca. 5 mg H₂O Aquastar®

The method corresponds to DIN 38405-13 and is analogous to ISO 6703, EPA 335.2, APHA 4500-CN- E, and ASTM D2036-09 D.

This Spectroquant® Cyanide Reagent Test allows the accurate quantification of the free and readily liberated cyanide content in aqueous samples.

Method applied: Cyanide ions react with a chlorinating agent to form cyanogen chloride. In a follow-up reaction with 1,3-dimethylbarbituric acid in the presence of pyridine a violet dye (König reaction) is formed which is determined photometrically (only free cyanide. For readily liberated cyanide samples must be decomposed by digestion).

The Spectroquant® Reagent Test Kits contain highly stable, ready-to-use reagent mixtures to perform the analysis according to the procedure described in the accompanying instruction leaflet.

All our Cell and Reagent Test Kits are equipped with the unique Live ID which allows seamless method recognition and contains essential information such as lot number, expiry date, and automatic calibration updates.

Description

CAS number: 110-82-7
Chemical Formula: C₆H₁₂
Molar Mass: 84.16 g/mol
Synonyms: Hexahydrobenzene, Hexamethylene, Naphthene

With their high degree of UV transmittance, low particle count, low acidity and alkalinity and low evaporation residue level, LiChrosolv® solvents are ideal for reproducible separations. Since separations are normally carried out under gradient conditions in analytical HPLC, we offer solvents in “gradient grade” as well as “isocratic grade”. This enables to minimize the gradient effect of the solvent involved. Filtered by 0.2 µm filter

Description

CAS number: 66-81-9
Chemical Formula: C15H23NO4
Molar Mass: 281.35 g/mol
Synonyms: 3-[2-(3,5-Dimethyl-2-oxocyclohexyl)-2-hydroxyethyl]glutarimide, Actidione, Naramycin A

Application

In yeast strains, cycloheximide has been used as a protein synthesis inhibitor in the cycloheximide chase experiment. It has been used to inhibit translation in mammalian cells and suppress fungal growth.

Biochem/physiol Actions

Cycloheximide (CHX) is an antibiotic produced by S. griseus. Its main biological activity is translation inhibition in eukaryotes resulting in cell growth arrest and cell death. CHX is widely used for selection of CHX-resistant strains of yeast and fungi, controlled inhibition of protein synthesis for detection of short-lived proteins and super-induction of protein expression, and apoptosis induction or facilitation of apoptosis induction by death receptors.

Description

CAS number: 9007-43-6

Application

Cytochrome c has been identified as an important mediator in apoptotic pathways. The release of mitochondrial cytochrome c into the cytoplasm stimulates apoptosis and is commonly used as an indicator of the apoptotic process in the cell. Investigation on the effect of Paris Saponin I (PS I) on human gastric carcinoma cell growth (SGC7901 cells) have shown an elevated level cytoplasmic cytochrome c. Results are inhibition of proliferation in SGC7901 cells by inducing mitochondria-dependent apoptosis through cytochrome c.

Biochem/physiol Actions

The ready interconversion of cytochrome c between ferrous and ferric states makes it an efficient biological electron carrier. It plays a vital role in cellular oxidations in both plants and animals. Generally regarded as a universal link in the respiratory chain, it forms the essential electron-bridge between the respirable substrates and oxygen.

Description

Synonyms: sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate, Sodium phosphate dibasic
Formula: Na2HPO4

Disodium hydrogen phosphate anhydrous is typically used in the preparation of phosphate based buffer. The pKa of 6.82 at 25°C makes phosphate based buffer a universal buffer for biological applications.

Note:
AR: Analitycal Reagent Grade: Reagents for analytical purpose or research work that need high purity.
CP: Chemically Pure Grade: Reagents for regular practical in its original purity.

Description

CAS Number: 7558-79-4
Chemical Formula: Na₂HPO₄
Molecular Weight: 141.96 g/mol
Synonyms: di-Sodium Hydrogen Phosphate, Sodium Hydrogen Phosphate, Sodium Phosphate Dibasic
Quality Level: MQ300

Product Specification and MSDS for di-Sodium Phosphate (Merck).

Description

CAS number: 75-09-2
Chemical Formula: CH₂Cl₂
Molar Mass: 84.93 g/mol
Synonyms: DCM, Methylene chloride, Methylene dichloride

With their high degree of UV transmittance, low particle count, low acidity and alkalinity and low evaporation residue level, LiChrosolv® solvents are ideal for reproducible separations. Since separations are normally carried out under gradient conditions in analytical HPLC, we offer solvents in “gradient grade” as well as “isocratic grade”. This enables to minimize the gradient effect of the solvent involved. Filtered by 0.2 µm filter

Description

CAS number: 75-09-2
Chemical Formula: CH2Cl2
Molar Mass: 84.93 g/mol
Synonyms: Methylene chloride, methylene chloride

Application

Suitable for HPLC, GC, spectrophotometry, environmental testing and residue analysis.

**This product is not currently sold in Malaysia, please contact us for more information

Description:

CAS Number : 11024-24-1

Empirical formula : C56H92O29

A non-ionic detergent commonly used to solubilize membrane-bound proteins.

**This product has been discontinued, please contact us for more information.

Description

CAS number: 67-68-5
Chemical Formula: (CH3)2SO
Molar Mass: 78.13 g/mol
Sterility: Sterile-filtered
Synonyms: DMSO

Application

DMSO is a polar aprotic solvent used in chemical reactions, in polymerase chain reactions (PCR) and as a cryoprotectant vitrification agent for the preservation of cells, tissues and organs. DMSO is used in cell freezing media to protect cells from ice crystal-induced mechanical injury. It is used for frozen storage of primary, sub-cultured, and recombinant heteroploid and hybridoma cell lines; embryonic stem cells (ESC), and hematopoietic stem cells. DMSO is frequently used in the combinations with BSA or fetal bovine serum (FBS).

Other Notes

This product is a Hybri-Max product. It is hybridoma tested and is assessed for suitability in cell freezing. This product is sterile filtered (0.2 micron) and tested for endotoxin levels.

CAS number: 518-67-2
Chemical Formula: C20H18BrN3
Molar Mass: 380.28 g/mol
Synonyms: 3,8-Diamino-5-methyl-6-phenylphenanthridinium bromide, Trypadine

Application

Intercalating probe for nucleic acids. Suitable for fluorescence.