You Searched For: Mass+Spectrometry


7,063  results were found

SearchResultCount:"7063"

Sort Results

List View Easy View

Rate These Search Results

Supplier: VWR International
Description: Leptin is a hormone that is produced by adipose tissue and plays critical roles in the physiologic regulation of body weight. Leptin acts through the leptin receptor (LEPR) to regulate adipose mass by inhibiting hunger and balancing energy usage. Leptin mutations cause severe hereditary obesity and hypogonadism in rodents and humans. Leptin also has thermogenic actions, regulates enzymes of fatty acid oxidation, and is involved in hematopoiesis, angiogenesis, wound healing, inflammation, and immune responses.

New Product

Supplier: MP Biomedicals
Description: 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

Catalog Number: (470006-590)
Supplier: United Scientific Supplies
Description: This activity illustrates the relationships of mass, potential energy, and kinetic energy with marble races.

Small Business Enterprise


Supplier: VWR International
Description: Leptin is a hormone that is produced by adipose tissue and plays critical roles in the physiologic regulation of body weight. Leptin acts through the leptin receptor (LEPR) to regulate adipose mass by inhibiting hunger and balancing energy usage. Leptin mutations cause severe hereditary obesity and hypogonadism in rodents and humans. Leptin also has thermogenic actions, regulates enzymes of fatty acid oxidation, and is involved in hematopoiesis, angiogenesis, wound healing, inflammation, and immune responses.

New Product

Supplier: Avantor
Description: Compact Plant Fiber Masses.

Catalog Number: (470312-874)
Supplier: Avantor
Description: Examine how a microscope works.


Catalog Number: (470039-704)
Supplier: INDUSTRIAL SUPPORT INC.
Description: An exciting, interactive exploration, this generator includes various mass attachments to investigate degrees of string tension in standing waves.

Small Business Enterprise


Catalog Number: (470003-706)
Supplier: Avantor
Description: This machine, designed by teacher Bruce Yeany, offers a hands-on demonstration of the relationship between the moment of inertia and the distribution of mass.


Catalog Number: (470107-364)
Supplier: Avantor
Description: Matter has mass and takes up space. With this exciting kit, students explore the relationship of mass and volume using a spring scale and hook weights and observations.


Supplier: Ward's Science
Description: Meets AP Science Practices 4, 5, and 6

New Product

Catalog Number: (470137-886)
Supplier: Wards
Description: Unit consists of a sturdy metal frame carrying a DC motor with an eccentric shaft for exciting the vibrations. Clamp the frame to a table, attach a string and then simply use masses and a pulley to put tension on the string.


Catalog Number: (470017-104)
Supplier: Wards
Description: How Does Mass Affect Transverse Waves?


Catalog Number: (470013-290)
Supplier: Avantor
Description: The activity includes one triple sheave, one double sheave, and two single sheave pulleys, as well as a beautifully illustrated activity guide with questions, making it ideal for single student study or as a demonstration unit.


Catalog Number: (MFLX32681-22)
Supplier: AALBORG INSTRUMENTS & CONTROL
Description: Modular system works with any mass flow meter or controller*.

ISO9001 CE Compliant


Supplier: Wards
Description: Individual stainless steel Slotted Masses for placement on hangers, with stamped mass values for easy identification.

Supplier: Thermo Scientific Chemicals
Description: p-Toluidine 99%, crystalline molten mass

Inquire for Price
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
To process your orders without delay, please provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide ID that includes your business name & shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number. Acceptable forms of ID are:

  • State issued document with your organization's Federal Tax ID Number
  • State issued document with your organization's Resale Tax ID Number
  • City or County issued Business License
  • State Department of Health Services License
  • Any other ID issued by the State that includes the business name & address

* ATTN: California Customers may require additional documentation as part of the CA Health & Safety Code. Products that fall under this regulation will be placed on a mandatory 21-day hold after documentation is received. VWR will not lift restrictions for residential shipping addresses.

-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organization. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at 1-800-932-5000.
177 - 192 of 7,063
no targeter for Bottom