238709 Results for: "Prepared Agar Plates, Tubes and Bottles&amp"

Supplier: Thermo Scientific Chemicals

Baking powder, medicine (cathartic), component of Fehling's solution, silvering mirrors

Supplier: Thermo Scientific Chemicals

L(+)-Histidine monohydrochloride monohydrate 99%

Supplier: MilliporeSigma

Potassium antimony(III) oxide tartrate trihydrate, extra pure, Cas number: 28300-74-5, Synonyms: Antimony potassium tartrate, Potassium antimony tartrate, Tartar emetic, Pack size: 250G

Supplier: SPEX CERTIPREP LLC

CLP Standards for ICP & ICP-MS
Our Contract Laboratory Program (CLP) standards allow you to Calibrate with Confidence®. The standards are to be used in conjunction with the Statement of Work for Inorganic Analysis; Multi-Media/Multi-Concentration Document Number ILM 05.3/ISM 01.2.

The final ICP check, performed in our own laboratories, is your stamp of assurance. We calibrate our instruments with traceable reference materials and show you the actual found value of the solution you receive, not just an ideal, calculated number as so many other standards manufacturers do. The combination of elements, concentrations and matrices listed have been diagnosed by SPEX CertiPrep for convenience of use and stability.

US EPA SOW ILM 05.3/ISM 01.2 gives specific procedures for the methods of analysis, target elements, and concentrationlevels. Standards are specified not only by the elements present and their relative concentrations, but also the order and frequency of running standards, blanks and samples. Details of these specifications may be found in the US EPA SOW ILM 05.3/ISM 01.2 in the following sections:

• Exhibit C, Inorganic Target Analyte List (TAL)
• Exhibit D, Analytical Methods
• Exhibit E, QA/QC Requirements

Initial Calibration Verification for CLP Methods
The US EPA retains analytical services through the Contract Laboratory Program (CLP). The CLP follows detailed SOPs derived from EPA methods. The CLP methods require calibration of analytical instrumentation whithin the expected quantitative range (ICAL standards) and additional CLP QA standards (ICV standards) to verify the calibration curve at each of the selected wavelengths that wil be used for sample analysis.

Our verification standards contain all of the elements on the TAL list and are independent standards for testing an instruments calibration curve. SPEX CertiPrep's ICV standards are designed to be used with their corresponding instrument calibration standards (ICAL).

We recommend dilution of ICV standards to a range within your instruments calibration curve. A dilution of 20-fold is recommended.

Supplier: Thermo Scientific Chemicals

L(+)-Histidine monohydrochloride monohydrate 98+%

Supplier: Spectrum Chemical Mfg. Corp.

Sodium Tartrate, Dihydrate, Crystal, Reagent, ACS has a crystal structure that is able to capture a very precise amount of water and is used in the Karl Fischer moisture determination titration technique. As an ACS grade reagent, Spectrum Chemical manufactured compound is used as the quality standard against which other substances are grade and has met the toughest regulatory standards for quality and pureness

Supplier: Thermo Scientific Chemicals

MDL: MFCD00150989 Beilstein Registry No.: 6113568 Notes: Loses water of crystallization at 140°C unstable above 225°C

Supplier: Spectrum Chemical Mfg. Corp.

L-Cysteine Hydrochloride, Monohydrate is a semi-essential amino acid and can be biosynthesized in humans. It is often used as a food additive.

Supplier: MP Biomedicals

Potassium sodium tartrate tetrahydrate has been used in organic synthesis to break up emulsions in aqueous workups.

Supplier: Spectrum Chemical Mfg. Corp.

L-Histidine Monohydrochloride, Monohydrate, also known as 2-Amino-3-(1H-imidazol-4-yl)propanoic acid, is an alpha-amino acid with an imidazole functional group.

Supplier: Spectrum Chemical Mfg. Corp.

Antimony Potassium Tartrate, Powder, USP is also referred to as emetic tartar. It has long been known as a powerful emetic. All Spectrum Chemical USP products are manufactured, packaged and stored under current Good Manufacturing Practices (cGMP) per 21CFR part 211 in FDA registered and inspected facilities

Supplier: MP Biomedicals

Urea is the principal end product of nitrogen metabolism in most mammals, formed by the enzymatic reactions of the Kreb's cycle.
Urea is a mild agent usually used in the solubilization and denaturation of proteins. It is also useful for renaturing proteins from samples already denatured with 6 M guanidine hydrochloride such as inclusion bodies; and in the extraction of the mitochondrial complex. It is commonly used to solubilize and denature proteins for denaturing isoelectric focusing and two-dimensional electrophoresis and in acetic acid-urea PAGE gels. Urea is used in cell or tissue culture media to increase the osmolality. Urea has also been used as fertilizer because of the easy availability of nitrogen; in animal feeds; it is reacted with aldehydes to make resins and plastics; condensed with malonic ester to form barbituric acid; used in the paper industry to soften cellulose; used as a diuretic; enhances the action of sulfonamides; an antiseptic.
Urea in solution is in equilibrium with ammonium cyanate. The form that reacts with protein amino groups is isocyanic acid. Urea in the presence of heat and protein leads to carbamylation of the proteins. Carbamylation by isocyanic acid interferes with protein characterization because isocyanic acid reacts with the amino terminus of proteins, preventing N-terminal sequencing. Isocyanic acid also reacts with side chains of lysine and arginine residues resulting in a protein that is unsuitable for many enzymatic digests. In addition, carbamylation often leads to confusing results from peptides having unexpected retention times and masses. When performing enzymatic protein digests it is important to remove urea first. Even though some enzymes will tolerate small amounts of urea, the elevated temperature used for most reactions will lead to carbamylation during the course of the digest. The urea can be removed prior to digestion by fast reversed phase chromatography, spin columns, or dialysis.
Dissolve urea in deionized water to the desired concentration.For every 10 ml of solution, add 1 g of Amberlite® IRA-910.Stir for one hour at room temperature

Supplier: Ambeed

Sodium-L(+)-glutamate monohydrate 99%

Supplier: AVANTOR PERFORMANCE MATERIAL LLC

Sodium-L(+)-glutamate monohydrate 98.5-101.5% (dry basis) FCC

Supplier: Thermo Scientific Chemicals

Sodium-L(+)-glutamate monohydrate 98+%

Supplier: BeanTown Chemical

CAS: 6106-04-3; EC No: 205-538-1; MDL No: MFCD00150138; RTECS: MA1578000 Crystalline; Molecular Formula: C5H8NNaO4·H2O; MW: 187.13 Melting Point: 232° (decomposes) Optical Rotation: [α]20/D +4.2±0.3°, c = 1.2% in water

Supplier: MP Biomedicals

L-Glutamic Acid is a non-essential amino acid for human development; referred to as an excitatory amino acid (EAA) due to its role in neurotransmission. Acts as a neurotransmitter at fast synapses; agonist at kainate, NMDA and quisqualate receptors. L-Glutamic acid is one of the two amino acids that contains a carboxylic acid group in its side chains.

Supplier: CELLTREAT Scientific Products

Centrifuge filters use centrifugal force to separate different components within a liquid or liquid mixture.

Supplier: CELLTREAT Scientific Products

Centrifuge filters use centrifugal force to separate different components within a liquid or liquid mixture.

Supplier: CELLTREAT Scientific Products

Non-sterile pipette tips for molecular biology, cell culture, and clinical testing where contamination from microorganisms doesn't directly impact the analytical results.

Supplier: CELLTREAT Scientific Products

Non-sterile pipette tips for molecular biology, cell culture, and clinical testing where contamination from microorganisms doesn't directly impact the analytical results.

Supplier: Foxx Life Sciences

Foxx Life Sciences presents the high-performance Single-Use bag assembly, designed for efficient fluid storage and transfer in critical bioprocessing applications. These bags feature ports engineered for enhanced integrity optimized flow, that minimizes fluid hold-up and provides reliable, repeatable, and high-throughput performance.

Supplier: AOBChem USA

Eco-Products® award-winning new line, vanguard, is a collection of groundbreaking molded fiber containers.

Supplier: KIDDER MFG. CO. LTD

Students build their own plant center!

Supplier: CELLTREAT Scientific Products

Filter systems are ideal for tissue culture media sterilization, life science and microbiology fluid applications, clinical, and general filtration.

Supplier: MilliporeSigma

Acetonitrile ≥99.9% tested for EPA533 and EPA537.1 PFAS Methods, LiChrosolv®, Supelco®

Supplier: MilliporeSigma

Water ≥99.9% tested for EPA533 and EPA537.1 PFAS Methods, LiChrosolv®, Supelco®

Supplier: MILWAUKEE INSTRUMENTS, INC.

Designed for advanced student experiments to test for quality in waste and drinking water, environmental labs, and aquaculture.

Supplier: WORLD PRECISION INSTRUMENTS LLC

The properties of this bio-compatible surgical adhesive make it exceptionally useful for neuroscience applications, peripheral nerve studies and similar biomedical applications. These  silicone elastomers also eliminate the mess and time involved in pre-mixing other commonly used formulations (such as Wacker SilGel^®and Sylgard^®). Each silicone elastomer is packaged in a double barrel syringe and is automatically mixed when pressed out of the mixer tip provided.