2186 Results for: "Media Bottles"

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

CLP ISM 01.2 & ILM 05.3 Standards for ICP
For ILM 05.3, a standard must be run at the Contract Required Detection Limits (CRDL). To verify linearity near the CRQL, this standard is analyzed at the beginning of the analysis run, after the ICV/ICB and before the ICSA and ICSAB. In addition, this standard must be run at a frequency of not less than 20 analytical samples and at the end of the analysis run, followed by the ICSA/ISCAB. The sequence order is CCV, CCB, CRI, ICSA, ICSAB, CCV, and CCB. For ISM 01.2, at least one of your calibration standards must be at the Contract Required Detection Limit (CRDL). This standard, when diluted, can be used as a calibration standard to fulfill this requirement.

Supplier: KEYSTONE ADJUSTABLE CAP CO., INC.

PureClean™ Autoclavable Muff Covers are made from 1421B DuPont™ Tyvek®, which is a new grade of uncoated, untreated, flexible Tyvek® material. It has been specifically designed for pharmaceutical use in steam sterilization applications. Keystone's PureClean™ Tyvek® material does not have a water soluble antistat agent applied to it during its manufacturing process.

Supplier: VWR International

Digital orbital shakers are designed for a wide range of applications such as solubility studies, extraction procedures, and cell cultures that require accurate and reproducible results.

Supplier: MP Biomedicals

Bovine albumin is a single polypeptide chain consisting of approximately 583 to 595 amino acid residues and no carbohydrates. At pH 5-7 it contains 17 intrachain disulfide bridges and 1 sulfhydryl group.

Supplier: MP Biomedicals

D-(+)-GALACTOSE, Purity: >/= 98%, CAS Number: 59-23-4, Molecular Formula: C6H12O6, Molecular Weight: 180.2, Grade: Anhydrous, Cell culture reagent, Appearance/Format: White powder, Storage: Room Temperature (15-30 deg C), Size: 500 g

Supplier: MP Biomedicals

Storage: Store at room Temperature (15-30 °C)
Sucrose is a nonreducing disaccharide composed of glucose and fructose, linked via their anomeric carbons. It is obtained commercially from Sugarcane, sugar beet (Beta vulgaris), and other plants and used extensively as a food and a sweetener.
Use to create sucrose gradients for purification of viruses and proteins.

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

Alternate Standards
We also provide a solution of alternate interferents and alternate analysis. Alternate interferents A (INT-A2) and alternate analytes B (INT-B2) may be prepared in combination with the INT-A1 and INT-B3 solutions mentioned, or any combination involving the four solutions, depending on the analytes and interferents of interest to you. We provides ICP-MS interferents and interferent check solutions for SW-845.

Supplier: Supra Sciences

Versatile basic reagent useful for scavenging excess acidic reagents and byproducts generated during reactions. Very effective in freebasing amine salts produced during HPLC purification.

Supplier: MP Biomedicals

Urea is a prinicipal protein metabolite end product of nitrogen metabolism in most mammals, formed by the enzymatic reactions of the Kreb's cycle and the major product for the removal of free ammonia (NH4+) in vivo.

Supplier: SPEX CERTIPREP LLC

CLP Standards for ICP & ICP-MS

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: SPEX CERTIPREP LLC

CLP Standards for ICP & ICP-MS

Supplier: MP Biomedicals

Indomethacin, an anti-inflammatory agent, inhibits Cox-1 and Cox-2 (cyclooxygenases) with selectivity for Cox-1 (IC50 of 230 nM) over Cox-2 (IC50 of 630 nM).

Supplier: MP Biomedicals

D-(+)-Trehalose dihydrate is a natural alpha-linked non –reducing disaccharide formed by an α,α-1,1-glucoside bond between two α-glucose units which yields 2 moles of D-glucose upon acid hydrolysis. Has 90% of the calorific content of sucrose.

Supplier: Cube Biotech

With diisobutylene-maleic acid (DIBMA), you can directly extract membrane proteins from cells without an intermediate step of detergent solubilization, like with SDS, which would usually interfere with the protein's function. Another advantage of DIBMA as a tool for protein solubilization is the lack of an absorbance maxima at 280 nm. In comparison to SMAs, this would usually interfere with protein quantification, as aromatic amino acids absorb at the same spectrum.

Supplier: SPEX CERTIPREP LLC

CLP interference standards for ICP & ICP-MS.

Supplier: MP Biomedicals

Storage: Store at -20 °C. Store Desiccated. Store Under Nitrogen. Protect from light.
5-Bromo-4-chloro-3-indolyl β-D-galactopyranoside, commonly known as X−Gal, is a histochemical substrate for β−galactosidase.
5-Bromo-4-Chloro-3-Indolyl-β-D-Galactopyranoside is used as indigogenic substrate for β-galactosidase, for detection of β-galactosidase-positive clones, and the identification of lac and bacterial colonies or phage plaques. It is the substrate of choice for blue-white selection of recombinant bacterial colonies with the lac+ genotype. X−Gal is cleaved by β−galactosidase to yield an insoluble blue precipitate. X−Gal is particularly useful in molecular biology applications to detect the activity of β−galactosidase which is frequently used as a reporter gene. In cloning, X−Gal is used to detect insertion of foreign DNA into the lacZ region of plasmid DNA using α-complementation which is based on vectors such as the pUC and the M13mp series that carry a fragment of the β-galactosidase gene encoding an α-fragment of β-galactosidase.

Supplier: SPEX CERTIPREP LLC

CLP Standards for ICP & ICP-MS

Supplier: 3M Healthcare

CUNO™ CTG-Klean system filter pack with Betapure™ AU series cartridge as part of a totally enclosed system that uses a separate pressure vessel and disposable filter pack to isolate the product from the housing. It reduces the extensive time, labor and operator exposure to impurities and cleaning solvents involved with filter change-outs and cleaning of conventional housings.

Supplier: VWR International

Digital orbital shakers are designed for a wide range of applications such as solubility studies, extraction procedures, and cell cultures that require accurate and reproducible results.

Supplier: ELGA LabWater

The PURELAB® flex range is designed to deliver accuracy, flexibility and ease-of-use. The award-winning system provides perfect water purity for analytical and life science applications which require RO type III water up to ultrapure type I (18.2 MΩ.cm) water. It allows focus on routine test work without concern about the water quality affecting test results.

Supplier: SPEX CERTIPREP LLC

CLP interferents standards for ICP & ICP-MS

Supplier: SPEX CERTIPREP LLC

CLP Standards for ICP & ICP-MS

Supplier: SPEX CERTIPREP LLC

CLP spike standard for ICP & ICP-MS.

Supplier: SPEX CERTIPREP LLC

CLP Standards for ICP & ICP-MS

Supplier: VWR International

Digital orbital shakers are designed for a wide range of applications such as solubility studies, extraction procedures, and cell cultures that require accurate and reproducible results.

Supplier: VWR International

Digital orbital shakers are designed for a wide range of applications including solubility studies, extraction procedures, and cell cultures that require accurate and reproducible results.

Supplier: VWR International

Digital orbital shakers are designed for a wide range of applications including solubility studies, extraction procedures, and cell cultures that require accurate and reproducible results.

Supplier: VWR International

Analog orbital shakers are designed for a wide range of applications, including cell cultures that require accurate and reproducible results.

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