Molecular Biology Buffers

  • DryBlend MES Buffered Saline, pH 4.7

    MES Buffered Saline DryBlend pouches are optimally suited for protein conjugation reactions involving EDC or performing other protein conjugations. 2-(N-Morpholiino)ethanesulfonic acid monohydrate (MES Buffered Saline) is a buffer that does not contain carboxyl groups or reactive amines. This buffer is also optimized to render the appropriate pH range for EDC protein conjugations and other protein reactions.

    Each pouch is optimize to quickly and consistently prepare 100 mM MES Buffer with 0.9% Sodium Chloride, pH 4.7. Simply dissolve the contents in 500 mL of water, and the buffer is ready. No need to weigh out powdered buffers, or for pH adjustments. CovaChem's DryBlend pouches have made preparing conjugation buffer a breeze. These pouches allow for easy preparation of fresh buffer with each new assay. No more wondering if a buffer is fresh.

    Package Sizes: 10 pouches, 50 pouches and bulk quantities

    Product Numbers: 19214-10pk, 19214-50pk and 19214-custom

    Product Name: DryBlend MES Buffered Saline, pH 4.7

    Storage: Room Temperature


    $59.00
  • DryBlend PBS (Phosphate Buffered Saline), pH 7.2

    Phosphate Buffered Saline (PBS) DryBlend pouches are optimally suited for protein crosslinking and protein modification reactions. PBS is an amine free buffer with a pH of 7.2 used in numerous molecular biology and protein related assays. Each pouch is designed to quickly and consistently prepare 100 mM Sodium Phosphate and 0.15 M Sodium Chloride, pH 7.2.

    Simply dissolve the contents in 500 mL of water, and the PBS buffer is ready to use. There is no need to weigh out buffers or for tedious pH adjustments. CovaChem's DryBlend pouches have made preparing conjugation buffer simpler than ever. These pouches allow for easy preparation of fresh buffer right before use. No more wondering if a buffer is fresh.

    Package Sizes: 10 pouches, 50 pouches and bulk quantities

    Product Numbers: 19213-10pk, 19213-50pk and 19213-custom

    Product Name: DryBlend PBS (Phosphate Buffered Saline), pH 7.2

    Storage: Room Temperature


    $43.00
  • Molecular Biology Grade Glycine

    Glycine is an amino acid frequently used in the preparation of electrophoresis buffers and other biological buffers. CovaChem's Molecular Biology Glycine is also used to quench amine reactive cross linking reactions, such as protein crosslinking assays with BS3. Every batch of CovaChem's Molecular Biology Grade Glycine is lot tested for exceptionally high purity, with typical lot purity being higher than 99.8%.

    Package Sizes: 50 grams, 250 grams and bulk quantities

    Product Numbers: 19103-50, 19103-250 and 19103-custom

    Product Name: Glycine

    Product Grade: Molecular Biology Grade ≥ 99.5%

    Alternative Names: Aminoacetic acid; Glycocoll; Aminoethanoic acid; Glycine buffer; CAS# 56-40-6; C2H3NO2

    Storage: Room Temperature, Protected From Moisture


    Specifications

    Appearance: White Solid

    Purity: ≥ 99.5%

    Chlorides: 0.005% max

    Heavy Metals: 0.001%

    A260 nm: 0.02 max

    A280 nm: 0.02 max

    Solubility: To Pass Test

    Evaporative Residue: 0.1% max

    Sulfate: 0.005% max


    Properties

    Physical State: Solid

    CAS Number: 56-40-6

    Chemical Formula: C2H3NO2

    Molecular Weight: 75.07

    Tariff Code: 2922.49.4020

    $18.00
  • Molecular Biology Grade HEPES

    4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) is a zwitterionic organic buffer used in cellular and molecular biology applications. CovaChem's buffers are refined to be the quality leader in the life science industry. Each lot is analyzed to be Protease free, DNase free and RNase free, and routinely have purity values of 99.8% or higher.

    HEPES is frequently employed in isoelectric focusing and cell culture applications. This buffer has a useful pH range of 6.8 to 8.2.

    Package Sizes: 25 grams, 250 grams and bulk quantities

    Product Numbers: 19102-25, 19102-250 and 19102-custom

    Product Name: HEPES

    Product Grade: Molecular Biology Grade

    Alternative Names: 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid; 4-(2-Hydroxyethyl)piperazine-1-ethane-sulfonic acid; HEPES Free Acid; HEPES Buffer; C8H18N2O4S

    Tariff Code: 2933.59.9500

    Storage: Room Temperature, Protected From Moisture


    Specifications

    Appearance: White Crystalline Powder

    Purity: is ≥ 99.6%

    Heavy Metals: 10 ppm max;

    A260 nm: 0.050 max

    A280 nm: 0.050 max

    Solubility: To Pass Test

    Ignition Residue: 0.05% max

    Sulfate: 0.05% max


    Properties

    Physical State: Solid

    CAS Number: 7365-45-9

    Chemical Formula: C8H18N2O4S

    Molecular Weight: 283.30

    $18.00
  • Molecular Biology Grade MES, Monohydrate

    2-(N-Morpholiino)ethanesulfonic acid monohydrate (MES) is free of carboxyl groups and reactive amines. This buffer is frequently used in protein crosslinking procedures. CovaChem's buffers are refined to be the quality leader in the life science industry. Each lot is analyzed to be Protease free, DNase free and RNase free, and routinely have purity values of 99.8% or higher.

    MES is often used in protein coupling procedures involving EDC or similar carbodiimide crosslinking and conjugation reagents. This buffer are also frequently employed as an electrophoresis running buffer and as a buffer in plant or other biological assays where near neutral buffering capacity is required.

    Package Sizes: 25 grams, 250 grams and bulk quantities

    Product Numbers: 19101-25, 19101-250 and 19101-custom

    Product Name: MES Monohydrate

    Product Grade: Molecular Biology Grade

    Alternative Names: 2-(N-Morpholino)ethanesulfonic acid monohydrate; Good's buffer; 4-Morpholineethanesulfonic acid monohydrate; MES Hydrate; Morpholine-4-ethansulfonic acid; C6H13NO4S : H2O

    Storage: Room Temperature, Protected From Moisture


    Specifications

    Appearance: White Solid

    Purity: ≥ 99.6%

    IR: Conforms to Reference

    Chlorides: 0.005% max

    Heavy Metals: 1 ppm max

    A260 nm: 0.030 max

    A280 nm: 0.030 max

    Solubility: To Pass Test

    Ignition Residue: 0.05% max

    Sulfate: 0.05% max


    Properties

    Physical State: Solid

    CAS Number: 145224-94-8

    Chemical Formula: C6H13NO4S : H2O

    Molecular Weight: 213.25

    Tariff Code: 2934.99.9000

    Country of Origin: USA

    $18.00