New Look, Same Reliable Product - Now from PR1MA™!

PR1MA™ Rainbow Centrifuge Tubes

High-Performance, Color-Coded Sample Clarity.

PR1MA™ Rainbow Centrifuge Tubes combine high-performance engineering with vibrant color-coded caps for effortless sample organization. Available in 15 mL and 50 mL conical formats, these tubes are made from premium-grade polypropylene with uniform wall thickness for outstanding clarity, durability, and centrifugal strength.

Engineered for a variety of lab applications, including stem cell research, PR1MA™ Rainbow Centrifuge Tubes are certified sterile, RNase-free, DNase-free, pyrogen-free, and cytotoxin-free. The leak-proof screw caps ensure secure storage, and both tubes and caps are safe for ultra-low temperature storage down to -86°C.

With maximum RCF ratings of 12,000 x g (15 mL) and 15,000 x g (50 mL), these tubes are ideal for demanding centrifugation tasks using appropriate rotors, cushions, and adapters.

Key Features

• Color-coded screw caps for easy sample tracking
• 15 mL tubes rated to 12,000 x g, 50 mL tubes rated to 15,000 x g
• Made from high-clarity, premium polypropylene
• Certified sterile, RNase/DNase/pyrogen/cytotoxin free
• Leak-proof design ensures secure sample containment
• Safe for -86°C ultra-low temperature storage
• Suitable for stem cell research, biobanking, and general lab use

Whether you're spinning down precious samples or storing them long-term, PR1MA™ Rainbow Centrifuge Tubes deliver uncompromising quality and reliability in every tube.

Specifications
 

Item	Size
PR-CT2715	0.67 x 4.65 In. | 17 x 118 mm
PR-CT2716	0.67 x 4.65 In. | 17 x 118 mm
PR-CT2750	1.14 x 4.53 In. | 29 x 115mm
PR-CT2751	1.14 x 4.53 In. | 29 x 115mm

PR1MA™ Sterile Serological Pipets, Bulk Packed in Bags

• Convenient bulk packaging option
• All serological pipets are manufactured to the ASTM Standard Specification for Serological Pipets E-934
• Bi-directional (positive and negative) graduations are printed in bold easy-to-read ink
• Premium material barrier plug
• Color coded stripes and packaging enable quick volume identification
• Printed indicator arrow for quickly locating negative graduations when using a pipet controller
• RNase/DNase Free

1 mL Serological Pipet - PR-SERO-1SB

•  Packed sterile, 25 bulk packed/bag, 1000 per Case
• Maximum Volume - 1mL
• Graduated Increments - 1/100mL

2 mL Serological Pipet - PR-SERO-2SB

• Packed sterile, 25 bulk packed/bag, 800 per Case
• Maximum Volume - 2mL
• Graduated Increments - 1/100mL

5 mL Serological Pipet - PR-SERO-5SB

• Packed sterile, 25 bulk packed/bag, 500 per Case
• Maximum Volume - 5mL
• Graduated Increments - 1/10mL

10 mL Serological Pipet - PR-SERO-10SB

• Packed sterile, 25 bulk packed/bag, 500 per Case
• Maximum Volume - 10mL
• Graduated Increments - 1/10mL

25mL Serological Pipet - PR-SERO-25SB

• Packed sterile, 25 bulk packed/bag, 200 per Case
• Maximum Volume - 25mL
• Graduated Increments - 2/10mL

PR1MA™ Autoradiography and Chemiluminescence Film for Western Blots

One autoradiography film for ALL your needs!

Many companies sell film solely on price without considering your needs. Some offer many different films making it difficult to decide what is best for your needs.

MIDSCI™ narrowed the Autoradiography Film field to PR1MA™ Blue Sensitive Film. It will work outstandingly well for almost 100% of all molecular labs' needs.
 

• PR1MA™ Autoradiography Film is double emulsion
• High signal sensitivity
• For autoradiography of ³²P, ³³P, ³⁵S, ¹²⁵I, and ¹⁴C
• Excellent lot-to-lot consistency
• Exceptional clarity with extremely low backgrounds
• Consistently superior results for exposure of blotting experiments and sequencing gels
• Publishable grade autoradiographs
• Optimized for chemiluminescence
• Film works with calcium tungstate or blue rare earth screens
• For use manually or with automatic processing
• 100 sheets per box
• Available in 3 sizes: 5 x 7 in., 8 x 10 in., and 14 x 17 in.

Specifications

Autoradiography, and, Chemiluminescence, Film, Western, blots, PR1MA, MIDSCI, Laboratory Supplies, High-Quality, Research, Consumables, Reagents, Equipment, Customer Service, Quick Shipping, Satisfaction Guarantee, Personalized Solutions, Universities

 
PR1MA™ Microcentrifuge Tube Aluminum Cooler Racks

• Keep Microcentrifuge Tubes cold or hot on the bench
• Non-Skid rubber feet provide a stable platform for loading samples
• Gets cold in as few as 25 minutes
• Samples stay cold on your bench top for up to an hour
• Small footprint minimizes bench top and freezer space used
• Precisely drilled wells allow for maximum heat transfer between the block and samples

Microcentrifuge, Tube, Aluminum, Cooler, Racks, PR1MA, MIDSCI, Laboratory Supplies, High-Quality, Research, Consumables, Reagents, Equipment, Customer Service, Quick Shipping, Satisfaction Guarantee, Personalized Solutions, Universities

 
PR1MA™ Flasks-Erlenmeyer (PETG)

Vent Cap, Plain Bottom, PETG, Sterile

• Designed for mammalian suspension culture applications as well as bacterial & yeast culture
• Vent caps feature 0.22 µm hydrophobic membrane which allows for gas exchange without contamination; over-sized vent area in cap improves gas exchange
• Packaged sterile in individual bags for easy storage and handling
• Manufactured from medical grade virgin PETG which reduces gas permeability

 
Specifications
 

Item	667801	667805	667809	667813
Pack Description	1/Bag	1/Bag	1/Bag	1/Bag
Case Quantity	12	12	12	6
Sterile	Yes	Yes	Yes	Yes
Non-pyrogenic	Yes	Yes	Yes	Yes
Autoclavable	No	No	No	No
Primary Color	Flask: Clear	Flask: Clear	Flask: Clear	Flask: Clear
Secondary Color	Cap: Green	Cap: Green	Cap: Green	Cap: Green
Primary Material	Flask: PETG	Flask: PETG	Flask: PETG	Flask: PETG
Secondary Material	Cap: HDPE	Cap: HDPE	Cap: HDPE	Cap: HDPE
Maximum Volume	125 mL	250 mL	500 mL	1000 mL
Working Volume	125 mL	250 mL	500 mL	1000 mL
Graduated	Yes	Yes	Yes	Yes
Graduation Increments	25 mL	25 mL	50 mL	50 mL
Tissue Culture Treated	No	No	No	No
RNase/DNase Free	Yes	Yes	Yes	Yes

 

PR1MA™ Cryo Tube Aluminum Cooler Rack

• Keep Cryo Tubes cold on the bench
• Non-Skid rubber feet provide a stable platform for loading samples
• Gets cold in as few as 25 minutes
• Samples stay cold on your bench top for up to an hour
• Small footprint minimizes bench top and freezer space used
• Precisely drilled wells allow for maximum heat transfer between the block and samples

PR1MA™ Standard Petri Dishes

Sterile, Stackable, and High-Performance.

PR1MA™ Standard Petri Dishes are designed for precision, durability, and convenience in microbiology, cell culture, and general lab applications. Manufactured using high-capacity automated production lines, these petri dishes deliver consistent quality at a competitive price—ideal for academic, industrial, and research laboratories.

Each dish features a 15 mm height and is available in both 60 and 100 mm diameters, with various design options tailored to your lab's needs—including multi-compartment formats, slideable bases, and automation-compatible slippable versions.

These dishes are sold sterile (gamma irradiated) and packaged 25 per bag / 20 bags case, making them ideal for high-throughput laboratories.

Key Features

• Durable Construction: Stronger, heavier design ensures better handling and stability.
• Hydrophobic Surface: Prevents unwanted cell attachment—perfect for suspension cultures.
• Sterile and Ready to Use: Gamma irradiated for dependable sterility.
• Efficient Gas Exchange: Molded lid spacers promote proper ventilation.
• Even Media Distribution: Consistently flat base supports uniform media spreading.
• Slideable and Slippable Options: Available variants support automation with ISO mark targets, side arrows, and edge rings for smooth operation.
• Specialty Compartments: Choose from 2, 3, or 4-compartment formats for multi-sample testing in a single dish.
• Various options: Standard, slideable, slippable, or with compartments (2, 3, or 4) 

Whether you're working with automated streaking systems or manual plating, PR1MA™ Petri Dishes are designed to support efficient lab workflows with minimal contamination risk.
 

PR1MA™ PCR Aluminum Cooler Racks

• Keep PCR Tubes, Strip Tubes, and PCR Plates (96 & 384) cold or hot on the bench.
• Non-Skid rubber feet provide a stable platform for loading samples.
• Gets cold in as few as 25 minutes.
• Samples stay cold on your bench top for up to an hour.
• Small footprint minimizes bench top and freezer space used
• Precisely drilled wells allow for maximum heat transfer between the block and samples

Specifications 

PCR, Aluminum, Cooler, Racks, PR1MA, MIDSCI, Laboratory Supplies, High-Quality, Research, Consumables, Reagents, Equipment, Customer Service, Quick Shipping, Satisfaction Guarantee, Personalized Solutions, Universities

PR1MA™ Solution Bottles

• Compatible with bottle top filters or for use as solution storage containers
• Polystyrene bottles are packaged sterile, individually wrapped 

Specifications 

PR1MA™ 24-Well Deep Well Plates

Manufactured from pure polystyrene with no additives and sterilized by gamma irradiation, these plates ensure optimal sterility and performance. Plates are single-use (non-autoclavable) and come individually wrapped/sealed in polyethylene foil.

• Plates have square wells of 17 x 17 mm and 40 mm deep
• Typical shaking conditions: 225 rpm/50 mm, or 300 rpm/25 mm

Fully Skirted Square 24-Deep Well Microplate with Disposable Cover (PR-CR1424-CDC)

Older version of PR-CR1424-CL. Mainly used with the Thermo Fisher™ Cytomat™ Selector series and for further automation uses.

• Pyramid bottom for easy centrifugation (pellet in center well)
• Comes with a disposable low-evaporation sandwich cover (1.2 mm holes) on top
• Mainly used for automation purposes where the PR-CR1424-CL ridges are an issue 

Square 24-Deep Well Microplates with PS Lid (PR-CR1424-CL)

• Used for leachable-sensitive cultures, such as the cultivation of CHO- and HEK cells
• Pyramid bottom for easy centrifugation (pellet in center well)
• Stackable two high in our universal clamps
• Barcoded version available for sample tracking (PR-CR1424-CLB)

Square 24-Deep Well Microplates with Disposable Cover (PR-CR1424-CLDC)

• Low evaporation disposable covers (1.2 mm holes) mounted on top
• Pyramid bottom for easy centrifugation (pellet in center well)
• Stack three high in our universal clamps 

Grey/White Square 24-Deep Well Microplates with a Transparent Bottom (PR-CR1424-DG)

• Has a transparent bottom and is thus suitable for use in the Growth Profiler
• Light grey to prevent cross-talk between wells, ensuring the most accurate measurements, even at lower ODs 

Extra Tall 4-Position Universal Clamp (PR-CR1812DC-L)

For use with 24-Deep Well Plates and disposable covers.

Special clamping system with ultra-high pillars to support triple-stacked plates and disposable covers, such as the PR-CR1424-CLDC series. Fits various shaker platforms.

If stainless covers are used, only two 24-Deep Well Plates and covers are to be stacked (to prevent a too high center of gravity)

Specifications
 

Item #	Plate Description	Plate Height	Wells	Bottom Style	Vol.	Rec. Culture Vol.	Color
PR-CR1424-CL	Square deepwell w/ disposable PS lid	44 mm	24 Wells, 40 mm	V-Bottom	264 mL	3 mL	Clear
PR-CR1424-CLB	Square deepwell w/ disposable PS lid and barcode	44 mm	24 Wells, 40 mm	V-Bottom	264 mL	3 mL	Clear
PR-CR1424-CDC	Sq. deepwell w/ dispo. sandwich cover, 1.2 mm holes (Cytomat use)	44 mm	24 Wells, 40 mm	V-Bottom	264 mL	3 mL	Clear
PR-CR1424-CLDC	Square deepwell w/ disposable sandwich cover, 1.2 mm holes	44 mm	24 Wells, 40 mm	V-Bottom	264 mL	2.5 mL	Clear
PR-CR1424-DG	Square deepwell, disposable	44 mm	24 Wells, 40 mm	Transparent	264 mL	2.5 mL	Grey/White
PR-CR1812dc-L	Ultra high universal clamp with 4 positions, for triple stacking of 3 MTPs + disposable covers (fits various shaker platforms)

 

Disclaimer

Thermo Fisher™ and Cytomat™ are trademarks of Thermo Fisher Scientific Inc. Our products are third-party items designed for compatibility with Thermo Fisher™ instruments. Thermo Fisher Scientific Inc. does not manufacture, sponsor, or endorse our products, and is not affiliated with these offerings in any way.
 
 

PR1MA™ LTS™ Style Pipette Tips

These tips deliver superior accuracy and precision, ensuring reliable and consistent results. We are proud to manufacture our products in the USA and are committed to sustainability.

Our racks and boxes are made from our exclusive post-consumer resin, while the tips and lids are made from 100% virgin polypropylene for optimum clarity and purity.

These tips are the perfect fit for use with Rainin® LiteTouch® pipettors and are compatible with both single- and multi-channel LiteTouch® pipettors.

• Compatible with Rainin® single- and multi-channel LiteTouch® pipettors
• Light force required to add or eject tips
• Available in racked, sterile, filtered sterile, and reload varieties
• Tips are made from medical-grade virgin polypropylene

• Rack bases and grids are made from our exclusive 50% post-consumer recycled polypropylene—a reduction of up to 30% in the use of virgin polypropylene per rack of tips.

• Proprietary resin technology facilitates clean release
• Certified free of detectable RNase, DNase, DNA, PCR inhibitors, and tested pyrogen-free

Upgrade your pipetting experience with PR1MA™ LTS-Style Tips, which feature ultralow ejection force for comfortable, ergonomic pipetting.

Rainin, LTS and LiteTouch are registered trademarks of Mettler-Toledo Rainin, LLC.

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

New Look, Same Reliable Product - Now from PR1MA™!

PR1MA™ 5 and 10 mL Transport Tubes

Leak-Proof, 95kPa Compliant, and Sterile.

PR1MA™ Transport Tubes are high-quality, leak-proof tubes designed for the secure transport, storage, and freezing of biological samples. Widely used in clinical, hospital, pharmaceutical, environmental, food testing, and research laboratories, these tubes meet the rigorous demands of modern laboratory workflows and 95kPa transportation compliance—making them suitable for air transport of infectious or high-value specimens.

These 5 mL (16 x 60 mm) and 10 mL (16 x 80 mm) tubes are constructed from high-grade polypropylene and feature vivid white printed graduations and a dedicated marking area for easy sample identification and tracking. All tubes are self-standing for stable benchtop use.

Two reliable sealing options are available:

• Standard Screw-Cap Tubes – Features a leak-proof 1.25-turn screw cap that comes pre-attached for convenience
• O-Ring Screw-Cap Tubes – Engineered with an integrated silicone O-ring that exceeds 95kPa standards, ensuring maximum containment in high-pressure and extreme temperature environments

Both types are available in:

• Sterile (with pre-attached caps)
• Non-sterile (with separately packaged caps)
• RNase, DNase, and pyrogen-free
• 100/bg, 10 bgs/cs for high-throughput laboratory use

Key Features

• Leak-proof screw caps (standard or O-ring options)
• Exceeds 95kPa compliance standards for safe air transport
• Durable, medical-grade polypropylene
• Clear printed graduations and writing area
• Available in 5 mL and 10 mL sizes
• Sterile (pre-attached caps) and non-sterile (caps separately packaged)
• Self-standing design for benchtop stability
• Ideal for storage, freezing, and transport of liquid samples