Supplies

High-Quality Laboratory Supplies for Reliable Research

MIDSCI understands that the right lab supplies are the foundation of reliable research across the life sciences. When your lab relies on frequent replenishment of essential scientific supplies, we deliver the labware you need with the speed and personalized service you don’t see with big-box distributors.

From glassware and plasticware to PPE, pipette tips, test tubes, and reagent reservoirs, we offer over 40,000 products designed for accuracy, durability, and compliance. Whether you work in life sciences, microbiology, or pharmaceutical development, our lab essentials help you maintain efficiency without compromising quality.

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Heathrow Scientific® Acrylic Microtube Rack Stands

 

Holds 8 x 80-Well Racks.

 

Organize your lab efficiently with the Heathrow Scientific® Acrylic Stands for Microtube Racks. This durable, clear acrylic storage rack is designed to securely hold up to eight 80-well microtube racks, making it ideal for storing 1.5 mL or 2.0 mL microtubes. Perfect for laboratory benchtops, the stand allows for easy access and visibility while maximizing your workspace.

 

Choose from two orientation styles to suit your setup:

  • Vertical Rack Dimensions: 6.2 x 9.3 x 9.2 In. (15.7 x 23.6 x 23.4 cm)
  • Horizontal Rack Dimensions: 12.2 x 9.3 x 4.8 In. (31 x 23.6 x 12.2 cm) 

Main Attributes

  • Holds up to 8 microtube racks, each with 80 wells
  • Compatible with both 1.5 mL and 2.0 mL microtubes
  • Made of strong, clear acrylic for long-lasting use
  • Provides ample space for sliding racks in and out with ease
  • Helps keep large numbers of microtubes neatly organized 

This microtube rack stand is an essential accessory for any laboratory requiring efficient tube storage, visibility, and accessibility.
 

Check out 80-Well Microtube Racks! 
 

Item#:
AASMISCRKS


Heathrow Scientific® Stand Alone Racks for 50 mL Tubes

 

Single-well tube holders for conical and round-bottom tubes.

 

Heathrow Scientific® 50 mL Stand Alone Racks are compact, single-well holders specifically designed to support 50 mL conical and round-bottom tubes. With a 29 mm well diameter, these racks provide a snug fit to keep tubes upright and secure. Open design allows for easy tube identification, ideal for fast-paced lab environments.

 

Available in three durable material options to suit different lab needs:

  • Polystyrene (Blue)
    • Smooth-sliding base for easy repositioning on benchtops
    • Lightweight and economical
    • Sold in packs of 5
  • Polypropylene (Assorted Colors: Blue, Green, Yellow, Orange, Pink)
    • Interlockable design for modular configurations
    • Molded circular base ring keeps tubes securely in place
    • Chemical-resistant and durable
    • Sold in packs of 5
  • HDPE-Coated Steel Wire (Yellow)
    • Sturdy wire construction with protective HDPE coating
    • Base ring ensures tube stability
    • Autoclavable from -40ºC to 121ºC for sterilization

These stand-alone racks are perfect for organizing single 50 mL tubes in research labs, clinical settings, and educational environments.

 

Specifications
 
Item #Dimensions
HS23053A3.6 x 1.2 In. | 9.2 x 3 cm
HS230523.2 x 2.8 x 2.6 In. | 8.3 x 7 x 6.7 cm
HS230513.5 x 2.6 x 2.6 In. | 9 x 6.7 x 6.7 cm
 

Item#:
ASTDALONERK


Adapt-a-Rack® Multi-Tube Racks

 

Holds tubes up to 50 mL, autoclavable, linkable design.

 

Adapt-a-Rack® Multi-Tube Racks are a versatile and space-saving solution for securely holding a wide range of tube sizes (up to 50 mL) in laboratory environments. Made from durable, autoclavable Polyoxymethylene material, this innovative rack features flexible fingers in each well to hold tubes upright, no adapters or inserts needed.

 

Designed for convenience and efficiency, the rack includes open sides for easy tube label visibility, a flat base for stability, and a linkable design that lets you connect multiple racks to expand storage as needed. Available in solid or combination colors, the Adapt-a-Rack® also supports easy color-coding for sample or workflow identification.

 

Perfect for clinical, research, industrial, or educational labs, this multi-tube rack helps streamline your workflow while maximizing bench space.

 

Key Features

  • Holds multiple tube sizes up to 50 mL
  • Flexible fingers grip tubes securely in an upright position
  • Open-sided design allows clear label visibility
  • Flat base provides stability during handling and centrifugation prep
  • Linkable racks for expanded tube holding capacity
  • Autoclavable at 121°C for sterilization and reuse
  • Available in solid or multicolor combinations for easy coding 

Specifications

MaterialPolyoxymethylene
Capacity4 Wells
Well Diameter12 to 30 mm
Tube Size7 to 50 mL
Dimensions (D x W x H)7.1 x 2.2 x 3 In. | 18.1 x 5.6 x 7.6 cm
 

Item#:
ASMULTCONFIG2


Heathrow Scientific® Interlocking Cube Racks

 

Multi-Tube rack, 42-well capacity. Interlocking on all sides!

 

The Heathrow Scientific® Interlocking Cube Rack is a versatile and space-saving solution for organizing a wide range of laboratory tubes. Designed to interlock on all sides, these cube racks can be connected in multiple orientations, allowing you to work with different-sized tubes simultaneously across a connected system.

 

Each polypropylene module rack is autoclavable at 121°C and features 42 wells, with specifically sized holes to accommodate a wide variety of lab tubes:

 

Holds up to:

  • (4) 50 mL conical tubes
  • (10) 15 mL conical tubes
  • (12) 12 x 75 mm or 12 x 100 mm tubes
  • (16) 1.5 mL to 2.0 mL microcentrifuge tubes
  • Tubes from 3 mL to 7 mL also fit comfortably

Racks are made from durable, chemical-resistant polypropylene and come in assorted bright colors (orange, yellow, green, blue, and pink), making it easy to color-code samples or organize by project.

 

Sold in a pack of 5, these cube racks are perfect for streamlining workflows and maintaining a tidy benchtop in any laboratory setting.

 

Specifications
 
SideTube SizeCapacityWell DiameterDimensions Per Rack
Side A1.5 mL16 Wells11.5 mm3 x 4.3 x 4.5 In.
76.2 x 109.22 x 114.3 mm
Side B3 to 7 mL12 Wells12.5 mm
Side C15 mL10 Wells17 mm
Side D50 mL4 Wells30 mm
 

Item#:
ASCUBERACKCOLOR


Rota-Rack® Tube Racks

 

Rota-Rack® Tube Racks are highly versatile and space-efficient solutions designed to accommodate a wide range of laboratory tubes. Featuring interlocking and adjustable modules, these racks allow you to organize and support multiple tube sizes within the same system, making it perfect for dynamic lab workflows.

 

Made from durable, autoclavable polypropylene, the Rota-Rack® is compatible with a variety of tube types, including culture tubes, centrifuge tubes, microcentrifuge tubes, and both flat or conical bottomed tubes. Its modular design provides flexibility, allowing users to reconfigure the rack to suit their specific needs.

 

Main Attributes

  • Supports a wide variety of tube sizes and styles
  • Interlocking, adjustable modules for customizable configuration
  • Compatible with round, flat, or conical bottomed tubes
  • Ideal for culture, centrifuge, and microcentrifuge tubes
  • Made of polypropylene to be strong and chemical-resistant
  • Autoclavable at 121°C for safe sterilization 

Perfect for research, clinical, or teaching labs, the Rota-Rack® provides flexibility, organization, and durability in one compact design.

 

Specifications
 
Item #SideTube SizeCapacityWell DiameterColorsDimensions
HS29040ASide A10-13 mL10 Wells13.5 mm4 modules
(purple, blue,
green, &
yellow)
8.8 x 4.3 x 4.3 In.
224 x 109 x 109 mm
Side B15-20 mL6 Wells16 mm
Side C10-15 mL8 Wells20 mm
Side D50 mL2 Wells29 mm
HS29040BSide A15 mL6 Wells16.4 mm8.2 x 3.9 x 3.9 In.
208 x 99 x 99 mm
Side B1.5 mL9 Wells11.2 mm
Side C0.5 mL12 Wells8 mm
Side D0.2 mL32 Wells6.5 mm
HS29041ASide A (Blue)0.2 mL96 Wells6.5 mm2 modules
(Blue &
Purple)
11.6 x 4.6 x 1.3 In.
296 x 118 x 34 cm
Side B (Blue)1.5-2.0 mL48 Wells11.5 mm
Side C (Purple)0.5 mL48 Wells8 mm
Side D (Purple)1.5-2.0 mL48 Wells11.5 mm

Item#:
ASROTORK


Heathrow Scientific® Two Tier Microtube Rack

 

Optimize your lab organization and workflow with the Heathrow Scientific® Two Tier Microtube Rack, designed for improved visibility and efficient sample handling. This innovative, tiered microtube rack provides a clear view of your samples, allowing for faster and more accurate filling, identification, and retrieval.

 

Main Attributes

  • Elevated back tier improves sample staging and visibility, reducing handling errors and increasing workflow efficiency
  • Built from high-quality, chemical-resistant polypropylene, easy to clean and maintain
  • Fully autoclavable for sterile applications and reusable convenience
  • Front-facing finger slot allows for simple and safe microtube removal without disrupting adjacent tubes
  • Embossed alphanumeric index ensures fast and accurate sample organization and retrieval 

Ideal for molecular biology, clinical labs, and general lab use, this microtube rack combines functionality with durability to meet daily lab demands.

 

Specifications
 
ColorBlue
Tube Sizes1.0 mL and 1.5/2.0 mL 
Capacity20 Wells
Well Diameter10 mm
Dimensions8.3 x 3.5 x 2 In. | 21.1 x 9 x 5 cm
 

Item#:
ASTORRK5


Item # C1005-T5-60RK has been discontinued. For replacement, see item # C2592.   

5 mL SnapCap MacroTubes®

 

5 mL SnapCap MacroTubes® offer a largervolume alternative to standard 1.5 mL tubes while maintaining the same convenience, clarity, and ease of use. Made from high-quality polypropylene, each tube features an attached flip-top cap that forms a tight, leak-proof seal and can be opened or closed with one hand. The cap is engineered to maintain a reliable seal across a wide temperature range from –86°C to +80°C, making these tubes suitable for a variety of laboratory applications.

 

Designed with the same diameter as 15 mL centrifuge tubes, MacroTubes® are fully compatible with standard centrifuge rotors, racks, and equipment. In many workflows, these tubes effectively replace 15 mL conical tubes, helping labs reduce plastic waste, minimize storage requirements, and lower shipping costs.

 

The shortened tube length allows standard 1 mL and 5 mL pipette tips to reach the conical bottom, preventing pipettorshaft contamination and improving sample recovery. With exceptional clarity, dual graduations (every 0.2 mL and 0.5 mL), and a syringe port in the cap, these tubes provide maximum visibility and versatility.

  • Dimensions: 16.5 x 54 mm (not including rim and cap)
  • Maximum Centrifugal Force: 25,000 x g 

Main Attributes

  • Compatible with standard laboratory equipment
  • Easyopen, one-handed fliptop cap
  • Cap includes syringeaccess port
  • Exceptional optical clarity
  • Dual graduations at 0.2 mL and 0.5 mL
Item#:
AS5MLSNAPTUBES


IsoFreeze® MCT Color-Change Racks

 

Leave the Ice Buckets Behind!
IsoFreeze Color-Changing Racks take the guesswork out of sample preparation!

 

Using proven IsoFreeze temperature maintenance technology, the filled racks maintain a cool (refrigerator) environment on the bench or the workstation platform. This helps maintain a stable environment for PCR reagents, cells, enzymes, or other temperature-sensitive reagents. Industry Standard format tubes, strips, and 96 well plates, in both standard and low profile well shapes, are accommodated and are efficiently cooled in PCR, QPCR, and many other applications.

 

IsoFreeze PCR Racks are manufactured using polypropylene containing temperature-dependent color-change dye giving at-a-glance temperature indication for each well. There is a dramatic change to a contrasting color at 7ºC. IsoFreeze gel technology means the wells will stay cool for up to 4 hours, depending on ambient temperature and other factors.

  • Available in 2 color changing formats
  • Material: Rugged polypropylene and inert gel
  • Maintains temperature of less than 4°C for up to 2.5 or 3.5 hours depending on Rack

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

Item#:
ASSOFRZ


FlipTop Hinged Cardboard Freezer Boxes

 

Pre-Assembled, Color-Coded, Liquid-Resistant.

 

FlipTop Freezer Boxes offer a durable, space-saving solution for organizing and storing cryogenic vials and microtubes. Constructed from recyclable cardboard with a liquid-resistant outer coating, these boxes are designed for ultra-low temperature storage down to -196°C, making them ideal for use in cryogenic freezers and LN vapor-phase storage.

 

Each FlipTop box features an attached hinged lid that eliminates lid mix-ups and ensures foolproof sample identification. Boxes are shipped fully assembled, with your choice of either 81-place (9×9) or 100-place (10×10) cardboard dividers, and include drain slots for added safety and airflow.

For quick visual sorting, boxes are available in white and five vibrant colors, or in a convenient Rainbow Pack of assorted colors. Alpha-numeric grid markings appear on the top, sides, and bottom for consistent and accurate sample tracking.

 

Key Features

  • Hinged, attached lid – Prevents mix-ups and lost lids
  • Liquid-resistant coating – Protects samples from moisture and spills
  • -196°C temperature rating – Suitable for cryogenic storage
  • Available in 81-place or 100-place formats – 9×9 or 10×10 grids
  • Standard 5.25 x 5.25 x 2 In. size – Fits all standard freezer racks
  • Color-coded options – Choose from 6 colors or rainbow packs
  • Pre-assembled – Ready to use straight out of the box
  • Alpha-numeric coding – Located on all sides for easy reference

FlipTop Freezer Boxes are a reliable, economical choice for long-term sample organization in any research, clinical, or biobank environment.
 

Item#:
ASFRZBXFLIP


MTC
Bio Cardboard PCR Freezer Boxes

 

Store your PCR samples efficiently with the MTC Bio Cardboard PCR Freezer Box. Designed for maximum convenience and space-saving, this compact box features an SBS footprint that fits popular 2 In. freezer racks and is optimized for SBS formatted racks.

 

With 96 slots, it accommodates individual PCR tubes, 8-strip and 12-strip tubes, as well as non-skirted 96-well PCR plates. The attached hinged lid includes a printed alphanumeric grid for easy sample identification and a large marking area for labeling.

 

Built for durability and lab safety, the box includes LN2 drainage slots on the bottom for liquid nitrogen applications, making it ideal for cold storage in freezers, refrigerators, or general lab environments.

 

Main Attributes

  • Super compact design with SBS footprint
  • Fits standard 2 In. freezer racks
  • Holds PCR tubes, strips, and non-skirted 96-well plates
  • Hinged lid with printed alphanumeric grid and marking area
  • LN2 drainage slots for cryogenic storage 

Perfect for PCR sample storage, this freezer box ensures organization and reliability in any laboratory setting.   

Item#:
AS96PCRBX


DoubleDecker PCR Freezer Boxes

 

Maximize PCR Tube Storage.

 

Optimize your cold storage space with DoubleDecker PCR Freezer Boxes, the ideal solution for high-density PCR sample storage. Designed specifically for 0.1 mL and 0.2 mL PCR tubes and strip tubes, this two-level system doubles storage capacity while maintaining a low-profile height of under 2 In. (51 mm) to fit seamlessly into standard stainless steel freezer racks.

 

Each level includes 196 wells, giving you room for up to 392 individual PCR tubes in total. The top level is a removable cardboard tray featuring convenient finger grips, allowing easy access to the lower level. The box also supports 40 strips of 8 or 28 strips of 12 PCR tubes, making it a versatile solution for any lab using PCR workflows.

 

Whether you're working with single tubes or strips, the DoubleDecker box helps streamline sample organization and maximizes valuable freezer space without sacrificing accessibility or compatibility.

 

Key Features

  • Holds 392 total PCR tubes (0.1 mL or 0.2 mL)
  • Supports 40 x 8-strip or 28 x 12-strip PCR tube formats
  • Two-tiered system maximizes storage in minimal space
  • Fits standard stainless steel freezer racks
  • Cardboard upper tray with finger grips for easy access
  • Ideal for molecular biology, diagnostics, and PCR workflows

Specifications
 
MaterialCardboard
LidHinged
Configuration2 levels of 196 wells (392 wells), 14 x 14
Holds392 tubes, or 40 strips of 8 tubes, or 28 strips of 12 tubes
Tube Size0.1 mL and 0.2 mL PCR tubes, strips and plates
Dims (D x W x H)5.25 x 5.25 x 2 In. | 133.35 x 133.35 x 50.8 mm
 

Item#:
ASDDPCRFB

DryChill Ice-free Cooling Block

 

The DryChill cooling blocks are designed to store samples safely on the lab-bench without sample degradation due to temperature increase or fluctuation. Unlike traditional ice buckets, these blocks do not require any ice and are uniquely designed to minimize condensation, resulting in a convenient, mess-free cooling.

 

Each DryChill Cooling Block utilizes a proprietary gel refrigerant, designed to maintain cold (but not freezing) temperatures for extended time periods. Once the block temperature begins to warm, the visual indicator alerts the user by changing from purple to pink.

Four blocks are available for accepting a wide variety of commonly used research tubes and plates.

  • Ice-free, stable cooling for sample tubes
  • Unique design reduces condensation
  • Maintains 4°C for up to +200 minutes
  • 4 sizes for various tubes up to 50 mL
  • Visual temperature indicator 

Specifications   
 

Temperature~4°C for up to +230 mins.
Capacity DC9602 -
DC4020 -
DC0650 -
DC1215 -
96 x 0.2 mL
40 x 1.5/2.0 mL
6 x 50 mL
12 x 15 mL
DimensionsDC9602 -
DC4020 -
DC0650 -
DC1215 -
5.9 x 4.2 x 2.8 in.
14.7 x 10.5 x 7 cm
5.9 x 4.2 x 3.8 in.
14.7 x 10.5 x 9.6 cm
Weight2.2 lbs
Warranty2 Years
 
 

Item#:
ASDRYCHILLCB
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