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MIDSCI is your trusted source for American‑made lab supplies that help support compliance with the Federal Buy American Act and related federal purchasing requirements.

As a family‑owned U.S. laboratory supplier since 1983, we proudly partner with domestic manufacturers to provide high‑quality lab supplies, chemicals, equipment, and instruments made right here in the United States. With a Midwest‑based warehouse and representatives across the country, we deliver reliable products backed by real people and real support.

From everyday lab consumables and reagents to equipment and precision instruments, MIDSCI helps labs run efficiently, stay compliant, and support U.S. manufacturing. Whether you’re purchasing for a government facility, federally funded research program, or private lab that values domestic sourcing, MIDSCI makes it easy to buy American without sacrificing quality or service.

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PR1MA  G-418 Disulfate 50 mg / mL Solution

CAS Number: 108321-42-2
Molecular Weight
: 692.7
Chemical Formula: C20H40N4O10  2H2SO4
Solubility: Water
Storage Temp: 2-8°C

Aminoglycoside antibiotic used as a selective agent in transformation experiments.
 
Dissolved in Molecular Biology Grade Water and sterile filtered.
 
Research or further manufacturing use only, not for food or drug use.
  • Appearance: Clear Colorless Solution
  • Absorbance @ 280nm (1mg/mL in H2O):  0.015 nm
  • Absorbance @ 570nm (100mg/mL in H2O):  0.10 nm
  • Potency (Dried basis):  700 µg/mg
  • Sterility: Filtered through 0.22 µm filter Into sterile PETG bottles

Proudly made in the USA! Click here for more made in America products!  


PR1MA  TAE 10X Solution [TRIS Acetate EDTA 10X Solution]

Common Name: TRIS Acetate EDTA 10X Solution
CAS Number: 77-86-1, 64-19-7, 6381-92-6, 7732-18-5
Solubility: Water
Storage Temp: Room Temperature

10X solution contains:

  • TRIS-Base: 0.4 M
  • Acetic Acid: 0.2 M
  • EDTA: 10 mM
  • pH (10X Solution (@25°C): 8.2-8.4
Research or further manufacturing use only, not for food or drug use.

  • Appearance: Clear, Colorless Solution
  • pH: 7.8 - 8.2

Proudly made in the USA! Click here for more made in America products!

 

PR1MA LB Broth 1 Gram Buffered Capsules [Lennox L Broth]

Common Name: Lennox L Broth
Solubility: Water
Storage Temp: Room Temperature

Now available in convenient premeasured and pre-mixed capsules. Prebuffered media eliminates pH adjustments, dust and smells from the lab. For propagation and maintenance of E.Coli. Low Salt Formula. Molecular Biology Grade.

Add 20 capsules per liter of water. Heat and stir until capsule is completely dissolved. Buffer is set for 7.2 at 20°C using a 10mM solution of TRIS/TRIS HCl. Sterilize by autoclaving for 15 minutes.

Ingredients:

  • Tryptone: 10 g/L
  • Yeast Extract: 5 g/L
  • Sodium Chloride: 5 g/L

Research or further manufacturing use only, not for food or drug use.

  • Appearance: Capsules
  • Appearance of Solution: Prepared medium is yellow to gold and clear to moderately hazy
  • pH (2.15% solution @25°C): 6.8 - 7.2
  • Microorganism (E. coli ATCC 23724): Good to Excellent
  • Microorganism (E. coli ATCC 33694): Good to Excellent
  • Microorganism (E. coli ATCC 33849): Fair to Excellent
  • Microorganism (E. coli ATCC 39403): Good to Excellent
  • Microorganism (E. coli ATCC 47014): Good to Excellent
  • Microorganism (E. coli ATCC 53868): Good to Excellent

Proudly made in the USA! Click here for more made in America products!

PR1MA NZCYM Broth

Solubility: Water
Storage Temp: Room Temperature

Enriched medium for cultivating recombinant strains of E.Coli and propagating theta bacteriophage.

Dissolve 22 grams in 1 liter distilled water. Sterilize by autoclaving for 15 minutes.

Casein Digest Protein: 10 g/L
Yeast Extract: 5 g/L
Casamino Acids: 1 g/L
Magnesium Sulfate: 0.98 g/L
Sodium Chloride: 5 g/L

Research or further manufacturing use only, not for food or drug use.

  • DCM Appearance: Homogeneous, free flowing, light beige
  • PPM Appearance: Clear, No to light ppt, light yellow
  • pH (2.2 % Solution): 6.8 - 7.2
  • Escherichia coli ATCC 23724: Good to Excellent
  • Escherichia coli ATCC 33694: Good to Excellent
  • Escherichia coli ATCC 33849: Good to Excellent
  • Escherichia coli ATCC 39403: Good to Excellent
  • Escherichia coli ATCC 47014: Good to Excellent
  • Escherichia coli ATCC 53868: Good to Excellent
  • Country of Origin: Report

Proudly made in the USA! Click here for more made in America products!

PR1MA Nutrient Broth

Solubility: Water
Storage Temp: Room Temperature

For cultivating a variety of non-fastidious organisms.

Dissolve 8 grams in one liter distilled water. Heat solution to boiling with continuous stirring for one minute. Sterilize by autoclaving at 121°C for 15 minutes. Store at room temperature.

Beef Extract: 3 g/L
Pancreatic Digest of Gelatin: 5 g/L

Research or further manufacturing use only, not for food or drug use.

  • Appearance: Homogeneous Free Flowing,Beige Powder
  • pH (0.8 % Solution @25 oC): 6.6 - 7.0
  • Microorganism (Bacillus Subtilis ATCC 9372): Fair to Good
  • Microorganism (Escherichia Coli ATCC 25922): Good to Excellent
  • Microorganism (Salmonella Typhimurium ATCC 14028 ): Fair to Excellent
  • Microorganism (Staphylococcus Aureus ATCC 25923): Good to Excellent
  • Pancreatic digest of gelatin: 5.0 g/L
  • Beef Extract: 3.0 g/L

Proudly made in the USA! Click here for more made in America products!


Labcon ZAP™ Slik Aerosol Filter Universal Pipette Tips

ZAP™ Slik Aerosol filter Pipette Tips from Labcon combine the higher standard of ZAP filters with our own unique low retention pipette tips. These aerosol tips provide you with complete protection from sample carry-over at the same time they reduce sample retention. Incorporating a robotically inserted 10 um filter with a sponge-like porous pathway ZAP™ Slik tips have such a small pore they even block fluids in the unlikely event that you should over-pipette. And our SuperSlik®; polypropylene increases the hydrophobicity of tips surfaces, so they have up to 10 times less fluid retention.

ZAP™ Slik Aerosol Filter Pipette Tips have been proven in independent studies to block aerosol contamination. But unlike some leading brands of self-sealing aerosol resistant pipette tips they have no cellulose gum, toluene solvent, or colored dyes in the filter to mix with and contaminate your sample. Also, unlike self-sealing aerosol tips ZAP tips can be autoclaved in a steam autoclave. And ZAP tips will not wick fluids like cellulose filled aerosol resistant tips so you don't have to worry about how you hold your pipettor. Our ZAP tips in sterile racks, like all our other sterile products, receive valid sterilization processing compliant with ISO 11137. So unlike "pre-sterile" tips from other pipette tip suppliers you can use ZAP™ Slik tips for diagnostic and regulated procedures. And ZAP™ Slik tips are RoHS compliant, unlike other low retention tips, so you don't have to worry that additives will migrate into your sample.

  • 1171 - 10 uL ZAP™ Slik Pipette Tips
  • 1172 - 10 uL Extended Length with TubeGuard ZAP™ Slik Pipette Tips
  • 1173 - 10 uL Extra-Long ZAP™ Slik Pipette Tips
  • 1175 - 20 uL ZAP™ Slik Pipette Tips
  • 1143 - 20 uL ZAP™ Slik Pipette Tips for Rainin® LTS
  • 1174 - 100 uL ZAP™ Slik Pipette Tips
  • 1179 - 200 uL ZAP™ Slik Pipette Tips
  • 1144 - 200 uL ZAP™ Slik Pipette Tips for Rainin® LTS
  • 1146 - 200 uL Wide Orifice ZAP™ Slik Pipette Tips
  • 1178 - 300 uL ZAP™ Slik Pipette Tips
  • 1142 - 300 uL ZAP™ Slik Pipette Tips for Rainin® LTS
  • 1147 - 300 uL Extended Length ZAP™ Slik Pipette Tips
  • 1177 - 1000 uL ZAP™ Slik Pipette Tips
  • 1145 - 1000 uL ZAP™ Slik Pipette Tips for Rainin® LTS
  • 1148 - 1000 uL ZAP™ Slik Wide Orifice Pipette Tips

Packaging

96 Rack
Offer workhorse reliability and versatility. They have heavy hook hinges that are extremely durable and an ergonomic snap-latch that won’t catch gloves. Smooth rounded edges and a reinforced seal make these racks durable additions to your lab. Strong enough to be autoclaved many times. The separate rack insert includes a beveled top an extra-sturdy surface for multi-channel pipetting. A vent in the rack sides allows steam autoclaving to be more efficient and assures your tips are sterile. The long thin design of the 192 rack allows for more working space on the lab bench.

Eclipse UNO Refills
Bring the same ease, value, and low carbon footprint of Eclipse refills to aerosol filter tips. These refills use a validated sterile process and include an expiration date on every pack. Eclipse packaging in made exclusively from recyclable and renewable materials.

Proudly made in the USA! Click here for more made in America products!

Item#:
ASLABZAPSLIKFILT


PR1MA Ethanol, Reagent Grade

Appearance: Clear Colorless Free of Foreign Matter
Color Value: ≤ 15
Ethyl Alcohol, Denatured:
Conforms Specific Gravity: 0.782 - 0.802

Components:

  • Ethyl Alcohol: 90%
  • 2-Propanol: 5%
  • Methanol: 5%

Proudly made in the USA! Click here for more made in America products!  


PR1MA Nutrient Agar

 

Solubility: Water with Heat

Storage Temp: Room Temperature

 

For cultivating a variety of non-fastidious organisms.

Dissolve 23 g in one liter of distilled water. Heat the solution to a boil with continuous stirring for one minute. Sterilize by autoclaving at 121°C for 15 minutes. Mix the medium with gentle agitation to avoid bubbles prior to pouring plates. Store at room temperature.

Ingredients

  • Beef Extract: 3 g/L
  • Pancreatic Digest of Gelatin: 5 g/L
  • Shipping Dimensions: 3.50 x 7.00 x 3.50
  • Agar: 15 g/L
  • Shipping Weight: 1.2 lbs

*Research or further manufacturing use only, not for food or drug use.

  • DCM Appearance: Homogeneous Free Flowing, Beige
  • PPM Appearance: Trace to Light Haze, None to Light PPT, Light Beige Amber
  • pH (2.3% Solution @25 oC): 6.6 - 7.0
  • Bacillus Subtilis ATCC 9372: Good to Excellent
  • Microorganism (Escherichia Coli ATCC 25922): Good to Excellent
  • Microorganism -Pseudomonas Aeruginosa ATCC 27853: Good to Excellent
  • Microorganism (Staphylococcus Aureus ATCC 25923): Good to Excellent
  • Salmonella Typhimurium ATCC 14028: Good to Excellent

Proudly made in the USA! Click here for more made in America products!

PR1MA Luria Broth 1 Liter Buffered Capsules [Miller's LB Broth]

Each capsules has 25 g.  The 500 g package has 20 capsules, the 1 KG is 40 capsules and the 5 KG is 200 capsules.

CAS Number: 91079-40-2; 8013-01-2; 7647-14-5; 77-86-1; 1185-53-1
Solubility: Water
 Storage Temp: Room Temperature

Now available in convenient pre-measured and pre-mixed capsules. Pre-buffered media eliminates messy weighing and pH adjustments.

Simply dissolve 1 capsule per 1 Liter of distilled water. Water must be 37°C or warmer to completely dissolve gelatin capsule. Agitate. Sterilize by autoclaving for 15 minutes before use. Buffer is set for 7.2 at 20°C using a 10mM solution of Tris/Tris HCl. pH will vary depending on temperature.

For maintenance and propagation of E. Coli. High Salt Formula. Molecular Biology Grade.

Ingredients
:

  • Tryptone: 10 g/L
  • Sodium Chloride: 10 g/L
  • Yeast Extract: 5 g/L
  • Tris/Tris HCl: 1.5 g/L

Research or further manufacturing use only, not for food or drug use. 

  • Appearance: Capsules (cream to pale beige free flowing powder)
  • pH (2.5 % Solution @25 oC): 6.8 - 7.2
  • Microorganism (E. coli ATCC 23724): Good to Excellent
  • Microorganism (E. coli ATCC 33694): Good to Excellent
  • Microorganism (E. coli ATCC 33849): Fair to Excellent
  • Microorganism (E. coli ATCC 39403): Good to Excellent
  • Microorganism (E. coli ATCC 47014): Good to Excellent
  • Microorganism (E. coli ATCC 53868): Good to Excellent

Proudly made in the USA! Click here for more made in America products!


PR1MA Potato Dextrose Agar

 

CAS Number: 9012-36-6
Storage Temp: Room Temperature

Potato Dextrose Agar (PDA) is a versatile medium used for cultivating fungi, yeasts, and molds. It can be modified with acid or antibiotics to prevent bacterial growth and is commonly used for plate count methods in food, dairy, and cosmetic testing. PDA is suitable for growing clinically important yeast and molds. The nutrient-rich potato infusion in PDA promotes mold sporulation and pigment production in certain dermatophytes.
Research or further manufacturing use only, not for food or drug use.

  • Microorganism (Aspergillus niger ATCC 16404): Good to Excellent
  • Microorganism (Candida albicans ATCC 10231): Good to Excellent
  • Microorganism (Penicillium Roquefortii ATCC 10110): Good to Excellent
  • Microorganism (Saccharomyces cerevisiae ATCC 9763): Good to Excellent
  • Microorganism (Trichophyton interdigitale ATCC 9533): Good to Excellent
  • pH (4.04% H2O @25°C): 5.4 - 5.8

Item # KCP55000-1000 is proudly made in the USA! Click here for more made in America products!  

PR1MA Terrific Broth, Modified, Powder

CAS Number: 91079-40-2; 8013-01-2; 7778-77-0; 7758-11-4
Solubility: Water
Storage Temp: Room Temperature

Enriched media for maintenance and propagation of E. coli and plasmid growth. Produces higher cell densities resulting in greater yields of DNA or recombinant protein. Glycerol is used as a carbon source with this formulation instead of glucose as it will not ferment to acetic acid.

Ingredients:

  • Casein Digest Peptone: 12 g/L
  • Yeast Extract: 24 g/L
  • Dipotassium phosphate: 9.4 g/L
  • Monopotassium phosphate: 2.2 g/L
Research or further manufacturing use only, not for food or drug use.
  • DCM Appearance: Homogeneous Free Flowing, Beige to Yellow Beige
  • PPM Appearance: Clear Yellow to Amber, No PPT
  • pH (4.76% solution at 25°C): 6.8 - 7.4
  • Microorganism (E. coli ATCC 23724): Good to Excellent
  • Microorganism (E. coli ATCC 33694): Good to Excellent
  • Microorganism (E. coli ATCC 33849): Good to Excellent
  • Microorganism (E. coli ATCC 39403): Good to Excellent
  • Microorganism (E. coli ATCC 47014): Good to Excellent
  • Microorganism (E. coli ATCC 53868): Good to Excellent

Proudly made in the USA! Click here for more made in America products!


PR1MA EDTA 0.5M Solution pH 8.0

  • CAS Number: 6381-92-6; 1310-73-2; 7732-18-5
  • Solubility: Water
  • Storage Temperature: Room Temperature
  • Shipping Weight: 0.3 lbs
  • Shipping Dimensions: 3.38 x 4.63 x 3.38

Research or further manufacturing use only, not for food or drug use.

  • Appearance: Clear and Colorless Solution
  • pH: 7.90 - 8.10
  • Sterile: Pass   

Proudly made in the USA! Click here for more made in America products!  

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