Free Shipping for orders over $500!*

Products

1390 products

  • ThermoScript Reverse Transcriptase (RNase H-, MMLV), 25x

    PowerScript Plus Reverse Transcriptase (RNase H-, MMLV)

    SKU: E11-01

    A novel recombinant reverse transcriptase that exhibits much higher efficiency in the first-strand cDNA synthesis from RNA templates with secondary structures and high GC content. PowerScript Plus Reverse Transcriptase is engineered to perform under high temperatures (50°C - 60°C), facilitating the elimination of secondary structures associated with GC-rich RNA templates. Due to this unique feature, ThermoScriptTM Plus can synthesize full-length cDNA libraries from RNA templates up to 12 kb in length.  Features  Lack RNase H activity: higher yield of cDNA.  Thermal stable: the optimum reaction temperature is 50°C, the highest is 60°C. Can overcome the template RNA secondary structure, and finish the reverse transcriptase experiment smoothly.  Wide temperature range: can reverse transcript from 37-60°C, with more than 80% of the highest activity at 42°C-60°C. customer can choose the reaction temperature freely.  Strong amplification activity: Gene mutation enhanced the binding capacity of the enzyme and RNA. Increased the amplification speed, can obtain the quality cDNA, suitable for cDNA library construction.  Applications Synthesizing cDNA from a ssRNA Constructing cDNA library Source Recombination of E. coli containing Moloney murine leukemia virus reverse transcriptase gene from clone of Moloney murine. Unit definition Using Poly (A) as the template and oligo (dT) as the primer, the enzyme required to catalyze the incorporation of 1 nmol of dTTP within 10 minutes at 37 oC is defined as one active unit (U). Concentration: 200 U/ul Size: 25 ul, 100 ul Form: Enzyme supplied with 5X RT buffer  Storage: Store all components at -20°C

    $50.01 - $185.00

  • Pre-designed siRNA set A

    Pre-designed siRNA set A

    SKU: PSI01-01

    Provide a gene sequence, Gene ID, or Accession Number, 3 pairs of siRNA oligos (duplex) per target will be designed, synthesized and HPLC purified. At least one duplex will be guaranteed to reduce the target mRNA levels by 70% or more. If there is no effective siRNA duplex among the set, we'll re-design and re-synthesize one more time for you for free. These siRNA duplexes are pre-annealed, only need to be resuspended in included buffer before use.  Researchers could use siRNA duplex individually or with multiple duplexes mixed (siRNA pool). The knockdown efficiency, in many cases, could be enhanced by using siRNA pool. Component Size Purification 3 siRNA oligo pairs (3 duplexes) 2 OD/each HPLC 1 Negative control siRNA duplex 1 OD HPLC 1 FAM labeled siRNA control duplex 1 OD HPLC 1 Positive control siRNA duplex 1 OD HPLC

    $595.00

  • Precision Balance (100 g/1 mg) Precision Balance (100 g/1 mg)

    Precision Balance (100 g/1 mg)

    SKU: FA1003

    Large dual screen with backlight (front and back display),clear reading With counting, unit conversion and weighing Multi weighing units conversation: g/ct/oz. Universal power adapter supplied as standard, can use standard battery The low power warning, overload indication, level indicator, adjustable feet Stainless steel weighing pan and weighing platform Five-side full-transparent glass windscreen SKU  FA1003 Max Capacity 100g Accuracy Class II Min readout 20 mg Accuracy 0.01 g Repeatability ±0.0002g Linearity Error ±0.0002g Stability Time ≤3S Working temp. 15°C ~ 35°C Pan Size φ120mm Dimensions 320*195*280 mm Power Suppy  power adapter & 1.5V dry battery*4 Calibration Mode external calibration G.W. 4.0kg N.W. 3.0kg Packing Size 375*255*340 mm Communication Interface RS232(USB interface optional)

    $215.00

  • Precision Balance (200 g/1 mg) Precision Balance (200 g/1 mg)

    Precision Balance (200 g/1 mg)

    SKU: FA2003S

    Large dual screen with backlight (front and back display),clear reading With counting, unit conversion and weighing Multi weighing units conversation: g/ct/oz. Universal power adapter supplied as standard, can use standard battery The low power warning, overload indication, level indicator, adjustable feet Stainless steel weighing pan and weighing platform Five-side full-transparent glass windscreen SKU FA2003S Max Capacity 200 g Accuracy Class II Min readout 20 mg Accuracy 0.01 g Repeatability ±0.0002g Linearity Error ±0.0002g Stability Time ≤3S Working temp. 15°C ~ 35°C Pan Size φ120mm Dimensions 320*195*280 mm Power Suppy  power adapter & 1.5V dry battery*4 Calibration Mode external calibration G.W. 4.0kg N.W. 3.0kg Packing Size 375*255*340 mm Communication Interface RS232(USB interface optional)

    $215.00

  • Predesigned Chemically-Modified siRNA set C

    Predesigned Chemically-Modified siRNA set C

    SKU: PSI02-01

    (3 Pairs siRNA oligos + 3 siRNA controls) Provide a gene sequence, Gene ID, or Accession Number, 3 pairs of siRNA oligos (duplex) per target will be designed, synthesized and HPLC purified. At least one duplex will be guaranteed to reduce the target mRNA levels by 70% or more. If there is no effective siRNA duplex among the set, we'll re-design and re-synthesize one more time for you for free. These siRNA duplexes are pre-annealed, only need to be resuspended in included buffer before use.  Researchers could use siRNA duplex individually or with multiple duplexes mixed (siRNA pool). The knockdown efficiency, in many cases, could be enhanced by using siRNA pool. Component Size Purification 3 Chemically modified siRNA oligo pairs (3 duplexes) 2 OD/each HPLC 1 Negative control siRNA duplex 1 OD HPLC 1 FAM labeled Negative control siRNA duplex 1 OD HPLC 1 Positive control siRNA duplex 1 OD HPLC 1 OD=2.5-3 nmol Shipping cost for all siNRA orders is $40, unless using your own carrier account.

    $695.00

  • Predesigned Fluorescence-labeld siRNA set E

    Predesigned Fluorescence-labeld siRNA set E

    SKU: PSI03-01

    (3 Pairs siRNA oligos + 3 siRNA controls) Provide a gene sequence, Gene ID, or Accession Number, 3 pairs of siRNA oligos (duplex) per target will be designed, synthesized and HPLC purified. At least one duplex will be guaranteed to reduce the target mRNA levels by 70% or more. If there is no effective siRNA duplex among the set, we'll re-design and re-synthesize one more time for you for free. These siRNA duplexes are pre-annealed, only need to be resuspended in included buffer before use.  Researchers could use siRNA duplex individually or with multiple duplexes mixed (siRNA pool). The knockdown efficiency, in many cases, could be enhanced by using siRNA pool. Component Size Purification 3 Fluorescence-labeled siRNA oligo pairs (3 duplexes) 2 OD/each HPLC 1 Negative control siRNA duplex 1 OD HPLC 1 FAM labeled Negative control siRNA duplex 1 OD HPLC 1 Positive control siRNA duplex 1 OD HPLC

    $905.00

  • Prefiltration Kit (Three Stage)

    Prefiltration Kit (Three Stage)

    SKU: RW10311KT

    This product is designed to remove most of the particles, organic compounds and chlorine from tap water to protect RO membranes.Three choices of Prefilter are available for installation: Depth filter (10 micron and 1 micron) and Activated carbon filter. Purification Technology: Activated Carbon Anti-Scaling Depth Filtration Suitable for the following Millipore systems: Direct-Q Elix Large Elix Large Rios Milli-Q Direct Milli-Q Integral RiOs Any pure water systems with tap water inlet Disclaimer Third Parties: All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. All specifications are subject to change without notice. MILLIPORE, MILLI-Q, DIRECT-Q, SIMPLICITY, SYNERGY and ELIX are trademarks of Merck KGaA, Darmstadt Germany.

    $200.00

  • Prefiltration Kit (Two Stage)

    Prefiltration Kit (Two Stage)

    SKU: RW10211KT

    These products are designed to remove most of the particles, organic compounds and chlorine from tap water to protect RO membranes. Two choices of Prefilter are available for installation: Depth filter (either 10 micron or 1 micron) and Activated carbon filter. Purification Technology Activated Carbon Anti-Scaling Depth Filtration Suitable for the following Millipore systems  Direct-Q Elix  Milli-Q Direct  Milli-Q Integral  RiOs Any pure water systems with tap water inlet Disclaimer Third Parties: All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. All specifications are subject to change without notice. MILLIPORE, MILLI-Q, DIRECT-Q, SIMPLICITY, SYNERGY and ELIX are trademarks of Merck KGaA, Darmstadt Germany.

    $150.00

  • Premium Clear Blue X-ray Film, 5x7" (100 Count)

    Premium Clear Blue X-ray Film, 5x7" (100 Count)

    SKU: A03-01

    Fuji Film Exceptional film Clarity Extremely Low Backgrounds Consistently Superior Results for Chemiluminescence Excellent for Autoradiography of 14C, 35S, 32P, 33P, 125I No Obscure Signals from Samples Sharp and Clear Results Box After Box Manual or Automatic Development

    $50.00

  • Premium Clear Blue X-ray Film, 8x10" (100 Count)

    Premium Clear Blue X-ray Film, 8x10" (100 Count)

    SKU: A03-02

    Exceptional film Clarity Extremely Low Backgrounds Consistently Superior Results for Chemiluminescence Excellent for Autoradiography of 14C, 35S, 32P, 33P, 125I No Obscure Signals from Samples Sharp and Clear Results Box After Box Manual or Automatic Development

    $89.00

  • Protective Mask Shield (10 Count)

    Protective Face Shield (10 Count)

    SKU: FS10-10

    Specification: Condition: 100% Brand New Product Name: Protective Mask Shield Material: Plastic & Foam Color: Clear Size: 32cm * 22cm (L*W) / 12.60"in X 8.66"in Features: Fully transparent protective mask, anti-fog, anti-splash, isolation mask, full face protection. Effectively protects your entire face from viruses that may enter the eyes through flying dust and saliva. The protective mask uses a highly transparent and environmentally friendly substrate with high definition and is harmless to human health. Equipped with foam pads for comfort Suitable for various head shapes Package Includes: 10 Protective Face Shield (Instructions Included)

    $29.50

  • Proteinase K Solution (20mg/ml, 1ml)

    Proteinase K Solution (20mg/ml, 1ml)

    SKU: PK02-1ML

    Proteinase K is an endolytic protease that cleaves peptide bonds at the carboxylic sides of aliphatic, aromatic or hydrophobic amino acids. The Proteinase K is classified as a serine protease. The smallest peptide to be hydrolyzed by this enzyme is a tetrapeptide. Specific Activity: 40 U/mg protein Molecular Weight: 28.9 kDa monomer Source: Pichia pastoris cells with a cloned gene encoding Tritirachium album endolytic protease (Proteinase K). Applications Isolation of genomic DNA from cultured cells and tissues Removal of DNases and RNases when isolating DNA and RNA from tissues or cell lines  Determination of enzyme localization Improving cloning efficiency of PCR products  Quality Control DNase Activity: None detectable enzyme activity with λ DNA after 6 hrs incubation at 37ºC. RNase Activity: None detectable ribonuclease activity after 16 hrs incubation at 25ºC.  Dilution Buffer 50 mM Tris-HCl (pH 7.5), containing 5 mM calcium chloride and 50% (v/v) glycerol.  Definition of Activity Unit One unit of the enzyme liberates Folin-positive amino acids and peptides corresponding to 1 µmol tyrosine in 1 min at 37°C using denatured hemoglobin as substrate.Enzyme activity is assayed in the following mixture: 0.08 M potassium phosphate (pH 7.5), 5 M urea, 4 mM NaCl, 3 mM CaCl2 and 16.7 mg/ml hemoglobin. Storage For long time storage, store the Proteinase K powder at 4ºC and solution at -20°C.  Inhibition and Inactivation Inhibitors: Proteinase K is not inactivated by metal chelators, by thiol-reactive reagents or by specific trypsin and chymotrypsin inhibitors. Phenylmethylsulfonyl fluoride and diisopropyl phosphorofluoridate completely inhibit the enzyme. Inactivated by heating at 95°C for 10 minutes.  Other Note: Optimum activity at 50-55°C.  Rapid denaturation of enzyme occurs at temperatures above 65°C.  The recommended working concentration for Proteinase K is 0.05-1 mg/ml. The activity of the enzyme is stimulated by 0.2-1% SDS or by 1-4 M urea. Ca2+ protects Proteinase K against autolysis, increases the thermal stability and has a regulatory function for the substrate binding site of Proteinase K. Stable over a wide pH range: 4.0-12.5, optimum pH 7.5-8.0.

    $30.00

Login

Forgot your password?

Don't have an account yet?
Create account