3994 Results for: "Compendia-grade chemicals"

Supplier: MP Biomedicals

Sodium phosphate is a reagent with very high buffering capacity that is widely used in molecular biology, biochemistry, and chromatography. Sodium phosphate occurs in several forms: monobasic (NaH2PO4), dibasic (Na2HPO4), and tribasic (Na3PO4). Most neutral sodium phosphate buffer solutions consist of mixtures of the monobasic and dibasic forms to varying degrees, depending on the desired pH.
Sodium phosphate monobasic, Monohydrate is used as sequestrant, emulsifier and buffer in foods; as mordant in dyeing; for weighting silk in tanning; in manufacture of enamels, ceramics, detergents, boiler compounds; as fireproofing agent; in soldering and brazing instead of borax; as reagent and buffer in analytical chemistry; cathartic; laxative. A table for preparation of 0.1 M sodium phosphate buffer at 25 °C using various proportions of sodium phosphate monobasic and sodium phosphate dibasic has been published. A study of the effect of freeze-thaw storage cycles on proteins in sodium phosphate and potassium phosphate buffer solutions has been reported. The effect of 5 mM sodium phosphate on the efficacy of electrospray ionization (ESI) ion mobility spectrometry (IMS) analysis has been evaluated. A protocol for the purification of pyrogen-free mouse IgG1 monoclonal antibodies which uses 10 mM sodium phosphate (pH 7.4) has been published. An ion-pairing HPLC method for the analysis of 5-aminosalicylic acid has been reported. A TLC method for separation of nucleotide sugars in the study of glycosyltransferase activity has been published.
Room Temperature, Desiccate

Supplier: WORLD PRECISION INSTRUMENTS LLC

A wire eyelid speculum is a surgical instrument used by ophthalmologists to keep eyelids open during an exam or surgery. It consists of two curved blades that are gently inserted between the upper and lower eyelids to hold them open, allowing the ophthalmologist a clear view of the eye.

Supplier: MP Biomedicals

Storage: Store at room temperature (15-30 °C)
L-Tyrosine is one of the three aromatic amino acids, and is formed from the hydroxylation of phenylalanine.
L-Tyrosine is used in cell culture media and is a component of MEM amino acids solution. L-Tyrosine has been used in a cell culture study of the amino acid transport system b0,+ in epithelial cells isolated from chicken jejunum.

Supplier: Ansell Healthcare

TouchNTuff® 83-500 is an ultra-soft, sterile polyisoprene glove suitable for Class 100 (ISO 5) cleanroom environments. It provides a comfortable, 'second skin' feel for longer wear time and reduced hand fatigue.

Supplier: Globe Scientific

Diamond® RealSeal™ Plastic Laboratory Bottles from Globe Scientific meet the requirements of the most demanding applications. Rugged and durable, these bottles are a safe, shatterproof alternative to glass bottles for collection, storage, or shipping samples, media, and reagents.

Supplier: MP Biomedicals

Carboxymethyl Cellulose Sodium Salt is a high viscosity carboxymethylcellulose (CMC); the viscosity of a 1% solution in water at 25 °C is 1300-2200 centipoise (cps). The viscosity is both concentration and temperature dependent. As the temperaure increases, the viscosity decreases. As the concentration increases, the viscosity increases.

Supplier: Cytiva

Whatman Puradisc syringe filters from Cytiva's business combine premium quality with economic efficiency. They are well suited for rapid, routine syringe filtration of samples up to 100 ml.

Supplier: O&M HALYARD, INC

PUREZERO* Cleanroom Gloves are ideal for applications that involve handling delicate equipment in microelectronics, semiconductors, optics, pharmaceutical, and medical device manufacturing applications. They are specifically designed to meet the stringent requirements of cleanroom environments.

Supplier: Labconco

REDISHIP Logic Class II, Type A2 Biosafety Cabinets with 10" sash, right-side service fixture, UV, right and left side Vacu-Pass Portals and base stand, 115V, 60Hz

Supplier: Labconco

PuriCare procedure stations offer comprehensive personnel, product and environmental protection from hazardous particulates, including risk group agents requiring BSL 1-4 containment. These Class II, Type A2 biosafety cabinets are ideal for small animal research activities including surgical procedures, cage changing, weighing, and anesthesia delivery. All models ensure the highest standard of safety and performance and are listed to NSF/ANSI 49.

Supplier: MP Biomedicals

Storage: Store at Room Temperature (15-30 °C).
D-myo-Inositol is a component of membrane phospholipids, glycosylphophatidylinositol anchors that bind glycoproteins to cell membranes, and inositol phosphate second messengers. It is a growth factor for animals as well as microorganisms. Myo-Inositol is the most abundant form of polyols that serves as a structural element of secondary messengers in eukaryotic cells. Inositol or cyclohexane-1,2,3,4,5,6-hexol is a chemical compound, a sixfold alcohol (polyol) of cyclohexane. It exists in nine possible stereoisomers, of which the most prominent form, widely occurring in nature, is cis-1,2,3,5-trans-4,6-cyclohexanehexol, or myo-inositol (former name meso-inositol). Inositol is a carbohydrate, though not a classical sugar. It has a taste which has been assayed at half the sweetness of table sugar. Used as a lipotropic agent.
A component of membrane phospholipids, glycosyl­phosphatidyl­inositol anchors that bind glycoproteins to cell membranes, and inositol phosphate second messengers. In addition, inositol serves as an important component of the structural lipids phosphatidylinositol (PI) and its various phosphates, the phosphatidylinositol phosphate (PIP) lipids.

Supplier: Saint Gobain Performance Plastics

C-Flex® is a unique, patented thermoplastic elastomer specifically designed to meet the critical demands of the pharmaceutical, research, biopharmaceutical and diagnostics industries. C-Flex® biopharmaceutical tubing has been used by many of the world’s leading biotech and pharmaceutical processing companies.

Supplier: IBI Scientific

The IBI Low Profile Roller is a lightweight unit designed as a compact, space saving, non-dedicated instrument

Supplier: Spectrum Chemical Mfg. Corp.

Potassium Bitartrate, USP is used a stabilizer and pH control agent. 

Supplier: WORLD PRECISION INSTRUMENTS LLC

The knapp speculum is a surgical instrument used by an ophthalmologist to hold the eyelids apart in order to examine the back of the eye or the retina, or to perform some surgeries. This handheld speculum has two wire blades that are inserted between the eyelids.

Supplier: Texwipe

TX®728 Pre-wetted swabs with 100% Methanol solution from 100% polyester hydroentangled nonwoven material. Complete thermal bond construction eliminates adhesive contamination or head material releasing from the swab handle.

Supplier: MP Biomedicals

This product acts by binding to the 30S and 50S subunits, causing miscoding and inhibiting initiation and elongation during protein synthesis.

Supplier: Eppendorf

Eppendorf epT.I.P.S.® Bulk packs offer a practical, high-volume solution with 'Eppendorf Quality' pipette tips, ensuring precise and reliable measurements for various lab applications, packaged economically for high-throughput settings.

Supplier: MP Biomedicals

Methotrexate is a cell cycle arresting agent with varying effects. Methotrexate has been reported to arrest the cell cycle in late G1/S thus leading to the inhibition of the synthesis of DNA, RNA, thymidylates, and proteins. The main mechanism of action is reported to involve the inhibition of enzymes involved in purine metabolism which leads to the accumulation of adenosine or the suppression of intercellular adhesion molecule expression by T cells. Additionally, this compound has been observed to inhibit DHFR.
Methotrexate is used for chemotherapy either alone or in combination with other agents. It is effective for the treatment of a number of cancers including: breast, head and neck, leukemia, lymphoma, lung, osteosarcoma, bladder, and trophoblastic neoplasms. It is also used in treatment of autoimmune diseases, ectopic pregnancy, and for the induction of medical abortions. It is used to inhibit dihydrofolate reductase in DHFR-based protein expression systems. Also effective in treatment of pyrimethamine-resistant Plasmodium vivax malaria parasites.
Potent inhibitor of dihydrofolate reductase and agent for antitumor studies. Use to inhibit dihydrofolate reductase in DHFR-based protein expression systems. Also shows immunosuppressive effects in, e.g., rheumatoid arthritis.
Methotrexate is an allosteric inhibititor of dihydrofolate reductase (DHFR), the enzyme that catalyzes the conversion of dihydrofolate to tetrahydrofolate. Since tetrahydrolfolate is required for purine and pyrimidine synthesis, methotrexate treatment results in the inhibition of DNA and RNA synthesis.

Supplier: SW Safety Solutions

These gloves protect hands and the environment, with a sustainable single-use design that combines performance, durability, and tactile sensitivity for critical tasks.

Supplier: MP Biomedicals

MP EcoChrom™ Alumina, Activity Super I is essentially aluminum oxide, Al2O3, occurring in nature as minerals bauxite, bayerite, corundum, etc. This product meets the high recovery level required for the analysis of polychlorinated dibenzodioxins and dibenzofurans according to VDI Regulation 3499, part I.
MP EcoChrom™ Alumina B, Activity Super I is used for Dioxin analysis. It also been used for all chromatographic processes requiring highest activity and/or highest reproducibility.
Store at Room Temperature (15-30 °C)

Supplier: WORLD PRECISION INSTRUMENTS LLC

Spring scissors are a common type of surgical scissor that have a spring action for quick, clean cuts in microsurgery or dissection of delicate tissues. These spring scissors have long (12 mm) extra fine blades which gives you greater control in confined spaces. These spring scissors have small, sharp, pointed tips. While they are suitable for use by both left- and right-handed surgeons, they are often preferred by left-handed surgeons.

Supplier: HANNA INSTRUMENTS

It is a set of premium quality 1.413 µs/cm conductivity standards and pH 7.01 buffers that are NIST traceable and contained in portable single-use sachets. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna's line of conductivity solutions and pH buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. This package of calibration sachets are for 20 sachets (10 each) containing 20 ml of solution.

Supplier: 3M Healthcare

CUNO™ CTG-Klean System Filter Pack with Micro-Klean™ RB Series Filter Cartridge is part of a totally enclosed system that uses a separate pressure vessel and disposable filter pack to isolate the product to be filtered from the housing. It reduces the time, labor and amount of cleaning solvents required during filter change-out and cleaning of conventional housings.

Supplier: WORLD PRECISION INSTRUMENTS LLC

Mini blumenthal rongeurs are used for removing bone or other hard tissue during surgical procedures, often in dental procedures. Blumenthal rongeurs are designed with a pointed, triangular cutting tip for precise cutting and shaping of bone and other hard tissue.

Supplier: MP Biomedicals

Agarose is a purified linear galactan hydrocolloid isolated from agar or agar-bearing marine algae.
Agarose is useful in separation of nucleic acids electrophoretically because agarose gels have larger pore sizes than cross linked acrylamide gels at low concentrations and in chromatographic separations by either beading the agarose or cross-linking it. Agarose gels are also used in immunoelectrophoresis (IEP) and double-diffusion Ouchterlony plates to demonstrate antibody-antigen reactions. Agarose was used to prepare 0.5% agarose gel for Southern blot analysis of the DNA extracted from primate muscles.
The following is a list of properties associated with our agaroses: Sulfate content - used as an indicator of purity, since sulfate is the major ionic group present. Gel strength - the force that must be applied to a gel to cause it to fracture. Gel point - the temperature at which an aqueous agarose solution forms a gel as it cools. Agarose solutions exhibit hysteresis in the liquid-to-gel transition - that is, their gel point is not the same as their melting temperature. Electroendosmosis (EEO) - a movement of liquid through the gel. Anionic groups in an agarose gel are affixed to the matrix and cannot move, but dissociable counter cations can migrate toward the cathode in the matrix, giving rise to EEO. Since electrophoretic movement of biopolymers is usually toward the anode, EEO can disrupt separations because of internal convection.

Supplier: MP Biomedicals

Alcohol dehydrogenases are a group of dehydrogenase enzymes that occur in many organisms. It is a metalloenzyme containing four tightly bound zinc atoms per molecule. Each subunit also contains a second zinc atom (conformational zinc), which stabilizes the enzyme’s tertiary structure. Per subunit, there are two distinct active site sulfhydryl groups which can be distinguished on the basis of differential reactivity with iodoacetate and butyl isocyanate. A histidine residue is considered to have an essential role.

Supplier: Promega Corporation

Recombinant human MELK (1-340) was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag. MELK or maternal embryonic leucine zipper kinase is a member of the Snf1/AMPK kinase family.

Supplier: BioFit

The AdapTable™ convertible bench table system provides the flexibility in demand for today’s learning environment. This 244 cm (8 ft.) long model can be configured as a table with a bench on one side, a bench with a back, or ganged with a second unit to form a wider table with bench seating on two sides.

Supplier: 3M Healthcare

3M™ 100 Series high performance liquid filter bags using polypropylene microfibers that allow very fine particle capture at high efficiencies. With over 90% particle removal efficiency at their suggested application rating, our series 100 filter bags offer an excellent balance of high efficiency with very low initial pressure drop and an effective alternative to filter cartridges.