S2K Commerce - Products Dropdown
S2K Commerce - Shopping Cart
S2K Commerce - Order Entry
Chemicals
MIDSCI™ is Your Trusted Source for High-Quality Lab Chemicals and Reagents
Looking for reliable chemicals to power your research? MIDSCI™ delivers a full range of high-purity reagents, solvents, and buffers designed for life science, pharmaceutical, microbiology, and organic chemistry workflows. From essential acids and bases to specialized biochemicals, growth media, and DNA kits, our inventory ensures precision, consistency, and compliance, backed by Certificates of Analysis (COAs) and Safety Data Sheets (SDS).
Explore PR1MA™ Chemicals, our premium line of USP- and ACS-grade chemicals
Perfect for molecular biology, plant science, and cellular research, PR1MA™ products offer full traceability and documentation for your peace of mind.
Shop now for high-quality chemicals or contact our experts for personalized recommendations!
Looking for ways to save? Sign up for our newsletter to hear about upcoming offers!
This brand is being discontinued and will only be available while supplies last.
Need great (q)PCR Regents at a great price?
Try our PR1MA™ Taq and save!
Bullseye PREMIUM Std Taq
- Excellent all-purpose amplification enzyme
- Thermostable recombinant DNA polymerase from Thermus aquaticus
- Exhibits very high activity in primer extension
- Has both a 5' to 3' DNA polymerase and a 5' to 3' exonuclease activity
- Does not have 3' to 5' exonuclease activity-no proofreading ability
- Leaves an A-overhang, which makes the enzyme ideal for TA cloning
- Includes MgCl² in buffer
This brand is being discontinued, please contact us for other options.
Looking for other alternatives?
Visit our PR1MA Polymerase page for more options!
Bullseye PREMIUM Taq DNA Polymerases
Store at -20°C. For in-vitro laboratory use onlyBullseye Taq DNA Polymerase is a thermostable recombinant DNA polymerase, which exhibits very high activity in primer extension and other molecular biology applications. The enzyme is isolated from Thermus aquaticus and has a molecular weight of approximately 94 kDa.
Bullseye Taq DNA Polymerase has both a 5'®3' DNA polymerase and a 5'®3' exonuclease activity. The enzyme lacks a 3'®5' exonuclease activity (no proofreading ability). Taq DNA Polymerase leaves an A¢ overhang, which makes the enzyme ideal for TA cloning.
The 10X Reaction Buffer provided does not contain Mg+2. 25 mM MgCl2 is supplied separately.
10X Mg++ Free Standard Buffer
100 mM Tris-HCl pH 8.3, 500 mM KCl.
Unit Definition
One unit is defined as the amount that incorporates 10 nmoles of dNTPs into acid-precipitable form in 30 minutes at 72°C under standard assay conditions.
Storage and Dilution Buffer
Enzyme is supplied in 20 mM Tris-HCl pH 8.3, 100 mM KCl, 0.1 mM EDTA, 1 mM DTT, 0.5% Tween 20, 0.5%NP40, 50% glycerol.
Quality Control
Each lot of Taq DNA Polymerase is tested for contaminating activities, with no trace of endonuclease activity, nicking activity, exonuclease activity or priming activity.
Suggested Protocol using Taq DNA Polymerase
This protocol serves as a guideline only. Optimal reaction conditions may vary and must be individually determined.
n In some applications, MgCl2 is needed for the best results. For this reason, 25 mM MgCl2 is included with the kit.
1. Thaw 10X Mg2+ Free Standard Buffer, dNTP mix, primer solutions. It is important to mix the solutions completely before use to avoid localized concentrations of salts.
2. Prepare a master mix according to Table 1. The master mix typically contains all the components needed for extension except the template DNA.
Table 1. Reaction components (master mix & template DNA)
| Component | Vol./reaction | Final Conc. |
| 10X Mg2+ Free Buffer | 5 uL | 1X |
| MgCl2, 25 mM | 1- 9 uL | 0.5 4.5 mM |
| dNTP mix (12.5 mM of each) | 0.8 uL | 0.2 mM of each dNTP |
| Primer A | Variable | 0.11.0 uM |
| Primer B | Variable | 0.11.0 uM |
| Taq DNA Polymerase | Variable | 1-5 units |
| Template DNA | Variable | Variable |
| Distilled Water | Variable | - - - - |
| TOTAL volume | 50 uL | - - - - |
Table 2. MgCl2 concentration in a 50 mL reaction
| Final MgCl2 conc. in reaction (mM) | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 |
| Vol. of 25 mM MgCl2 per rxn (uL) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
Table 2 provides the volume of 25 mM MgCl2 to add to the master mix if a certain MgCl2 concentration is required.
3. Mix the master mix thoroughly and dispense appropriate volumes into reaction tubes. Mix gently, e.g., by pipetting the master mix up and down a few times.
4. Add template DNA to the individual tubes containing the master mix.
5. Program the thermal cycler according to the manufacturers instructions. For maximum yield and specificity, temperatures and cycling times should be optimized for each new template target or primer pair.
6. Place the tubes in the thermal cycler and start the reaction.
Looking for other alternatives?
2x Master Mix Kit (1.5 mM MgCl2)
Bullseye Taq DNA Polymerase Mix is a ready-to-use 2x reaction mix. Simply add primers, template, and water to successfully carry out primer extensions and other molecular biology applications.
Bullseye Taq polymerase, the NH4+ buffer system, dNTPs, and magnesium chloride are conveniently present in the Taq DNA Polymerase Mix. (Inert Red Dye is present in BE180303 only)
Bullseye Taq DNA Polymerase Mix offers several advantages. Set up time is significantly reduced. The chance of contaminating component stocks is eliminated. Reduction of reagent handling steps leads to better reproducibility. Standard tests can be set up with the confidence that results will be consistent every time.
Composition of 2x Taq Master Mix
150 mM Tris-HCl pH 8.5, 40 mM (NH4)2S04, 3 mM MgCl2, 0.2%
Tween 20Ò
4 mM dNTPs
2 units/µL AS ONE Taq polymerase
Inert Red Dye & Stabilizer (BE180303 only)
This brand is being discontinued, please contact us for other options.
Looking for other alternatives?
Visit our PR1MA Polymerase page for more options!
Bullseye PREMIUM R-Taq DNA Polymerase
R-Taq DNA Polymerase 5 units/µL
| Item # | Units | 10X Ammonium Buffer (MgCl2 15mM) | MgCl2 25 mM |
| BE200303 | 500 | 1.5 mL | 1.5 mL |
| BE200304 | 1,000 | 2x 1.5 mL | 2x 1.5 mL |
| BE200306 | 2,500 | 4x 1.5 mL | 4x 1.5 mL |
Store at -20°C. For in-vitro laboratory use only
Bullseye R-Taq DNA Polymerase is a thermostable recombinant DNA polymerase, which exhibits very high activity in primer extension and other molecular biology applications. R-Taq contains a red dye which provides easy and quick identification of reactions to which enzyme was added and allows confirmation of complete mixing. The inert dye has no effect on downstream processes. R-Taq is added directly to the reaction mix and is used in the same manner as standard Taq DNA Polymerase.
Bullseye R-Taq DNA Polymerase has both a 5'®3' DNA polymerase and a 5'®3' exonuclease activity. The enzyme lacks a 3'®5' exonuclease activity. R-Taq DNA Polymerase leaves an A-overhang, which makes the enzyme ideal for TA cloning.
- High performance thermostable DNA polymerase
- Red dye identifies tubes which contain enzyme and confirms complete mixing of reagents
- Leaves an A-overhang
Unit Definition
One unit is defined as the amount that incorporates 10 nmoles of dNTPs into acid-precipitable form in 30 minutes at 72°C under standard assay conditions.
Storage Buffer
Enzyme is supplied in 20 mM Tris-HCl pH 8.3, 100 mM KCl, 0.1 mM EDTA, 1 mM DTT, inert dye, 0.5 % Tweenà 20, 0.5% NP40, 50% glycerol.
| Component | Vol./reaction | Final Conc. |
| 10X Ammonium Buffer | 5 uL | 1X |
| dNTP mix (12.5 mM each) | 0.8 uL | 0.2 mM each dNTP |
| Primer A | Variable | 0.1-0.5 uM |
| Primer B | Variable | 0.1-0.5 uM |
| R-Taq DNA Pol | 1 mL | 5 units/reaction |
| Distilled Water | Variable | - - - - |
| Template DNA | Variable | 0.1-0.5 uG/reaction |
| TOTAL volume | 50 uL | - - - - |
Table 2. MgCl2 concentration
3. Mix the master mix thoroughly and dispense appropriate volumes into reaction tubes. Mix gently (e.g., by pipetting) the master mix up and down a few times.
4. Add template DNA (0.1-0.5 mg/reaction) to the individual tubes containing the master mix.
5. Program the thermal cycler according to the manufacturer's instructions.
For maximum yield and specificity, temperatures and cycling times should be optimized for each new template target or primer pair.
6. Place the tubes in the thermal cycler and start the reaction.
7. After primer extension, load 5-10 mL of a 50 mL reaction directly on an agarose gel for analysis.
Tween 20 is a registered trademark of ICI Americas, Inc.
| Final MgCl2 conc. in reaction (mM) | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 |
| Vol. of 25 mM MgCl2 / rxn (uL) | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
10X Ammonium Reaction Buffer
Tris-HCl pH 8.5, (NH4)2S04, 15 mM MgCl2, 1% Tween 20
Quality Control
Endonuclease, exonuclease and priming activities are not detected after 3 hours incubation of 1 mg of pUC19 plasmid DNA and 0.5 uG EcoR I digested lambda phage DNA at 72°C in the presence of 40 units of R-Taq DNA Polymerase.
Suggested Protocol using R-Taq Polymerase
This protocol serves as a guideline. Optimal reaction conditions such as incubation times, temperatures, and amount of template DNA may vary and must be individually determined.
1. Thaw 10X Ammonium Buffer, dNTP mix, and primer solutions. It is important to mix the solutions completely before use to avoid localized concentrations of salts.
2. Prepare a master mix according to Table 1. The master mix typically contains all the components needed for extension except the template DNA.
The optimal MgCl2 concentration should be determined empirically but, in most cases a concentration of 1.5 mM, as provided in the 1X Ammonium Buffer, produces satisfactory results. Table 2 provides the volume of 25mM MgCl2 to add to the master mix if a higher MgCl2 concentration is required.
Table 1. Reaction components (master mix & template DNA)
RunBlue SDS Running Buffer (NXB50500) a TEO-Tricine buffer system which provides a separation similar to the MOPS buffer used with BIS-TRIS precast gels. It provides enhanced separation of higher molecular weight proteins. The buffer can be for reduced and non-reduced samples.
RunBlue TGS Blot Buffer(NXB82600) has been specially formulated to provide optimal blot transfer of proteins from RunBlue Precast Gels. Supplied as a concentrate should be diluted by a factor of 10 for use with the RunBlue Dual Run and Blot system or a factor of 20 for use with other blotting methods.
IBIs MIDI and MAXI plasmid kits use pre-packed ion-exchange resin columns to purify plasmid or cosmid DNA from bacterial cultures. In the process, the modified alkaline lysis method and RNase treatment are used for creating cleared cell lysate with minimal genomic DNA and RNA contaminants. Using a gravity-flow procedure, the plasmid DNA in crude lystate has been bound to the column. he contaminants can be washed off with a wash buffer. Finally, the purified plasmid DNA is eluted by a high salt buffer and then precipitated with isopropanol for desalting. The entire procedure can be completed in less than 2 hours and the obtained high purity plasmid DNA is suitable for transfection, sequencing reactions, PCR, and in-vitro transcription.
| Sample size: | MIDI50 mL for high copy plasmid, 100 mL for low copy plasmid MAXI- 100 mL for high copy plasmid, 250 mL for low copy plasmid |
| Format | Ion-Exchange Resin Column |
| Operation | Gravity Flow |
| Binding Capacity | MIDI: 500 ug/ MAXI-1mg |
| Expectant Yield | MIDI-up to 200 ug of plasmid DNA/MAAX-up to 1 mg of plasmid DNA |
| Purity | Equal to that obtained by 2X CsCL-Gradient Centrifugation |
| Operation Time | 120 minutes or less |
| Applications | Transfection,: Sequencing, In vitro Trascrioption |
IBI High-Speed Mini Plasmid Kit
The High-Speed Mini Plasmid Kit isolates plasmid DNA from 1-5ml cultures using alkaline lysis and RNase treatment, ensuring minimal genomic DNA/RNA contamination.
Additional Details
The High-Speed Mini Plasmid Kits by IBI Scientific are designed to process a sample size of 1-4 mL of bacterial culture, yielding 20-30 µg for high-copy plasmids and 3-10 µg for low-copy plasmids. With an operation time of 30 minutes or less and a binding capacity of up to 30 µg, these kits offer a rapid and efficient solution for plasmid DNA extraction. Check out our basic guide for plasmid kits for more information.
Technical Details
In the presence of a chaotropic salt, the plasmid DNA in the lysate binds to the glass-fiber matrix in the spin column. The contaminants are washed off with an ethanol-based wash buffer. The purified plasmid DNA is eluted by a low salt elution buffer or water. This procedure does not require DNA phenol extraction or alcohol plasmid. Typical yields are 20-30 µg for high-copy numbered plasmids or 3-10 µg for low-copy numbered plasmids. The purified plasmid DNA is ready to use for restriction enzyme digestion, ligation, PCR, or sequencing reactions. The entire procedure can be completed in under 30 minutes.
Quality Control
The quality of the High-Speed Plasmid Mini Kit is tested on a lot-to-lot basis, by isolating plasmid DNA from a 4 ml overnight E. coli (DH5α) culture, containing plasmid p Bluescript (A600>2U/mL). Following the purification process, a yield of more than 20 µg is expected and the ratio of A260/A280 is between 1.7-1.9. The purified plasmid (1 µg) is used in EcoRI digestion and checked by electrophoresis.
Physical Specifications
| High-Speed Mini Plasmid Kit | |
| Format | Spin Column |
| Binding Capacity | 30 µg |
| Culture Input | 1-5 mL |
| Culture Type | Cultured bacterial cells |
| Plasmid Size | 1-15 kb |
| Typical Yield | 10-30 µg |
| Elution Volume | 30-100 µl |
| Operation Time | <15 minutes |
The I-Blue MINI Plasmid Kit was designed for rapid isolation of plasmid DNA from 1-7 mL of cultured bacterial cells. I-Blue Lysis Buffer (an optional color indicator) is included with the kit in order to prevent common handling errors, ensuring efficient cell lysis and neutralization. A modified alkaline lysis method and RNase treatment are used to obtain clear cell lysate with minimal genomic DNA and RNA contaminants. Typical yields are 20-35 µg for high-copy number plasmid or 3-10 µg for low-copy number plasmid from 4 mL of cultured bacterial cells. DNA phenol extraction or alcohol precipitation is not required and the entire procedure can be completed within 15 minutes. The purified plasmid DNA is ready for use in restriction enzyme digestion, ligation, PCR, and sequencing reactions.
Advantages
- Sample: 1-7 mL of cultured bacterial cells
- Yield: Up to 50 µg of pure plasmid DNA
- Format: Plasmid spin column
- Operation Time: Within 15 minutes
- Elution Volume: 30-100 µL
- Kit Storage: Dry at room temperature (15-25°C) for up to 1 year; PD1 and RNase A mixture should be stored at 2-8°C for up to 6 months
Quality Control
The quality of the I-Blue MINI Plasmid Kit is tested on a lot-to-lot basis by isolating plasmid DNA from a 4 mL overnight E. coli (DH5α) culture containing plasmid pBluescript (A600 > 2 U/mL). Following the purification process, a yield of more than 20 µg is obtained and the A260/A280 ratio is between 1.8-2.0. The purified plasmid DNA (1 µg) is used in EcoRI digestion, and analyzed by electrophoresis.
Kit Components
Component |
IB47170 |
IB47171 |
IB47172 |
PD1 Buffer* |
1 mL |
25 mL |
65 mL |
PD2 Buffer** |
1 mL |
25 mL |
75 mL |
PD3 Buffer |
1.5 mL |
45 mL |
100 mL |
I-Blue Lysis Buffer |
10 µL |
250 µL |
650 µL |
W1 Buffer |
2 mL |
45 mL |
130 mL |
Wash Buffer*** |
1 mL |
25 mL |
50 mL |
Elution Buffer |
1 mL |
6 mL |
30 mL |
RNase A (50 mg/mL) |
Added |
100 µL |
260 µL |
PD Columns |
4 |
100 |
300 |
2 mL Collection Tubes |
4 |
100 |
300 |
*For IB47171 and IB47172 add provided RNase A to PD1 Buffer then mix by shaking for a few seconds. Check the box on the bottle. PD1 and RNase A mixture should be stored at 2-8°C for up to 6 months. For IB47170 samples, RNase A was already added to PD1.
**If precipitates have formed in PD2 Buffer, warm the buffer in a 37°C water bath, followed by gentle shaking to dissolve.
***Add absolute ethanol (see the bottle label for volume) to Wash Buffer then mix by shaking for a few seconds. Check the box on the bottle. Be sure and close the bottle tightly after each use to avoid ethanol evaporation.
The Fast Ion Plasmid Maxi Kit (Endotoxin Free) uses pre-packed anion exchange resin columns to purify plasmid DNA from 100-250 ml of bacterial cultures. Modified alkaline lysis method (1) and RNase treatment are used for obtaining clear cell lysate with minimal genomic DNA and RNA contaminants. Once the plasmid DNA has been bound to the column, the contaminants can be washed off using the wash buffer. Finally, the purified plasmid DNA is eluted by a high salt buffer and precipitated with isopropanol for desalting. The entire procedure can be completed in 120 minutes and the obtained high purity plasmid DNA is suitable for transfection, sequencing reactions, PCR and in-vitro transcription.
Specifications: |
Endo Free Midi |
Endo Free Maxi |
Sample: |
50ml culture for high-copy |
100ml culture for high-copy |
100ml culture for low-copy |
250ml culture for low-copy |
|
Yield: |
up to 200ug of plasmid DNA |
500ug to 1mg of plasmid DNA |
Format: |
gravity flow |
gravity flow |
Time: |
approx 120 min. |
approx 120 min. |
The 96-Well Genomic DNA Kits are designed for high-throughput purification of total DNA (including genomic, mitochondrial and viral DNA) from whole blood and a variety of animal tissues or cells. This method uses Proteinase K and a chaotropic salt to lyse cells and degrade proteins. DNA in the chaotropic salt is bound by the glass fiber matrix of each well. Once any contaminants have been removed, the purified DNA is eluted by a low salt elution buffer or water. The entire procedure can be completed in 1 hour without phenol extraction or alcohol precipitation. These kits can be used for manual filtration or with robotic handling systems, and purified DNA with approximately 20-30kb is suitable for PCR or other enzymatic reactions.
Sample Size: |
Up to 25mg of animal tissues, mouse tails or swabs |
Format: |
96-Well Plates |
Operation: |
Centrifuge/Vacuum manifold |
Binding Capacity: |
Up to 30ug per well |
Operation Time: |
60 minutes |
The Genomic DNA Mini Kit for Plants provide a quick and easy method for purifying total DNA (including genomic DNA, mitochondrial and chloroplast DNA) from plant tissue. Samples are disrupted by both grinding in liquid nitrogen and lysis buffer incubation. The lysate is treated with RNase A to degrade RNA and then filtered to remove cell debris and salt precipitates. In the presence of the binding buffer, coupled with chaotropic salt, genomic DNA in the lysate binds to the glass fiber matrix of the spin column. Contaminants are removed using a Wash Buffer (containing ethanol) and the purified genomic DNA is eluted by a low salt Elution Buffer or TE. The procedure does not require DNA phenol extraction or alcohol precipitation, and can be completed in less than 1 hour. The purified genomic DNA is ready for use in PCR, Real-time PCR, Southern Blotting and RFLP.
|
MINI |
MAXI |
Sample Size: |
up to 100mg fresh plant tissue/ |
up to 1g of fresh plant tissue/ |
Format: |
Spin Column |
Spin Column |
Expectant Yield: |
up to 50µ g DNA |
up to 140µ g DNA |
Operation Time: |
60 min or less |
60 min |
The Genomic DNA Mini Kit for Tissue was designed specifically for purifying total DNA (including genomic, mitochondrial and viral DNA) from a variety of animal tissue, paraffin-embedded tissue, buccal swab and amniotic fluid. The provided micropestle can efficiently homogenize tissue samples to shorten the time in the Lysis Step. Proteinase K and chaotropic salt are used to lyse cells and degrade protein, allowing DNA to be easily bound by the glass fiber matrix of the spin column. Once any contaminants have been removed, using a Wash Buffer (containing ethanol), the purified DNA is eluted by a low salt Elution Buffer or TE. The entire procedure can be completed within 1 hour without phenol/chloroform extraction or alcohol precipitation. The expected yield of genomic DNA is up to 50µg and the purified DNA (with approximately 20-30 Kb) is suitable for use in PCR or other enzymatic reactions.
Sample Size: |
Up to 50mg of tissue or 200ul of blood |
Format: |
Spin Column |
Expectant Yield: |
up to 50µ g DNA in 50-200µ l |
Operation Time: |
60 min or less |
Web Content Viewer