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.

Need Help Finding the Right Lab Supplies for Your Research?

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eXTReme Seal Extra Strong Sealing Film

eXTReme Seal features an extra-strong thick adhesive to minimize evaporation, yet removes easily without leaving residue on the plate.

Features chamfered corners to eliminate plate overhang for robotics applications and tight storage conditions.

  • Certified DNase- & RNase- free
  • Ideal for use with raised-rim and non-skirted PCR plates
  • Available in a larger cut for flat-top semi-skirted and full-skirted PCR plates: eXTReme™ Seal, Large

Application

  • PCR
  • Robotics
Temp. Range
  • -20°C to +120°C

Helpful Tips

  • Selection of the proper film size will minimize evaporation
  • The film should not overhang or ride up the wall of a raised-rim plate
  • More complete coverage of skirted flat-top plates will reduce evaporation in the outer wells
  • End-tab removal before thermal cycling is highly recommended

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

ThermalSeal® RT2 Sealing Film

Optically Transparent, Highly Conformable Adhesive, Polyester Sealing Film.
 
Designed for use with standard 96-well plates where rows must be selectively protected or accessed. Available in a smaller cut for raised-rim and non-skirted PCR plates: ThermalSeal® RT2RR 

  • Certified DNase- & RNase- free
  • Ultra-high optical clarity
  • Minimizes evaporation and cross-contamination
  • Ideal for use with flat-top and hard-shell dual component (e.g. polycarbonate / polypropylene) PCR plates
  • Not recommended for removal after thermal cycling

Application

  • qPCR
Temp. Range
  • -40°C to +120°C

Helpful Tips

  • Selection of the proper film size will minimize evaporation
  • The film should not overhang or ride up the wall of a raised-rim plate
  • More complete coverage of skirted flat-top plates will reduce evaporation in the outer wells
  • End-tab removal before thermal cycling is highly recommended

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


Parafilm® M Sealing Film

 

Flexible, stretchable lab film for moisture-resistant sealing.

 

Parafilm® M Sealing Film is a trusted solution for sealing and protecting labware, widely used in scientific, medical, and industrial settings. This semi-transparent, thermoplastic film is made from a blend of polyolefins and waxes, offering two-way stretch and excellent sealing capabilities on various surfaces, including test tubes, flasks, beakers, and petri dishes.

 

With the ability to stretch over 200% of its original size, Parafilm® M conforms tightly to irregular surfaces and forms a strong, moisture-resistant barrier that prevents evaporation and contamination. It is odorless, non-toxic, and resistant to acids, alkalis, and organic solvents, making it ideal for sensitive applications.

 

Available in various sizes, Parafilm® M is an essential lab consumable for preserving sample integrity and minimizing environmental exposure.

 

Key Features

  • Forms a tight, moisture-resistant seal that adheres to glass, plastic, and metal
  • Highly stretchable, extends over 200% to fit irregular shapes
  • Resists acids, alkalis, saline solutions, and organic solvents for up to 48 hours
  • Non-toxic, odorless, and semi-transparent for safe and easy use
  • Self-sealing properties eliminate the need for adhesives or tapes
  • Prevents moisture loss and sample evaporation

Ideal for lab, industrial, and research applications.

 

Specifications
 
Item #Film WidthRoll LengthColorStretchabilityWaterproofNon-ToxicOdorless
HS234526A2 In.250 Ft.Natural200%YesYesYes
HS234526C4 In.250 Ft.Natural200%YesYesYes
HS234526B4 In.125 Ft.Natural200%YesYesYes
 

Item#:
ASSEAL


DuraSeal Sealing Film

  • Durable, heat-resistant, solvent-proof laboratory sealing film
  • Chemically resistant
  • Heat resistant & Microwave compatible
  • Tight sealing
  • Tear resistant
DuraSeal’s superior heat-resistant feature allows for containers to be incubated in boiling water baths without suffering the characteristic melting of paraffin-based alternatives. DuraSeal is polyethylene based and free of any adhesives.

DuraSeal is easy to use. There is no inter-leaf paper to strip away, just stretch the film symmetrically over a container opening and the 1.5 mil thick film contracts inwardly around the opening or neck of the container to provide a drum-tight, water-proof seal. The film can be elongated 500-800% before breakage. The film clings to itself, especially after stretching so the free edges of the film may be stretched around the container to secure the container edges.

Permeability Information

  • Oxygen = 125cc/100in2/24hrs at 23°C
  • Carbon Dioxide = 1300cc/100in2/24hrs at 23°C
  • Water Vapor = 1.0g/100in2/24hrs at 38°C and 90% R.H.

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

Item#:
ASSEAL2


ILP Clear Zone and Indexed Sealing Film

  • Pre-slit “x” wells allow for in-process access of wells without damage to film
  • 2-end tabs and a white colored insert with 96 clear rings assist in film alignment
  • Easy to peel 

Indexed Seal Pre-Slit Sealing Film

SF061PP-SLT-PRT, SF083PE-W-PRT, & SF083PE-C-PRT.

Clear, pre-slit, and printed wells; designed for in-process sample access.

 

Applications: Sample protection while processing, automation with pipette tips, and sample indexing

  • Reduce pipetting errors with easy-to-read well indexing
  • Ideal for protecting samples on the benchtop while working with the plate, especially for manual procedures
  • Easy in-process access and well-indexed labeling 

Clear Zone Pre-Slit Sealing Film, 96 well PP

 

SF063PP-SLT-CZ & SF063PP-96-CZ.
 

Clear with no adhesive over well areas and designed for in-process sample access with probes and reuse automation.

 

Applications: Sample protection while processing, autosamplers, automation with probes or needles

  • Best choice for automation; Ideal for protecting samples while in process
  • Adhesive-free well areas reduce potential contact with samples and the risk of fouling probes/needles 

Specifications

Item #SF061PP-SLT-PRTSF083PE-W-PRTSF083PE-C-PRTSF063PP-SLT-CZSF063PP-96-CZ
# of Plugs96
MaterialPolypropylenePETPETPolypropylene
Adhesive MaterialAcrylic; 1.1 Mil
Liner MaterialPET (polyethylene terephthalate)
ColorClearWhiteClear
AlphanumericPrinted
CertifiedDNase-/RNase-/Pyrogen-Free
Overall Height3.1 Mil3.9 Mil3.1 Mil3.9 Mil
Adhesive ThicknessAcrylic; 1.1 Mil
Top Width3.19 In. | 81.00 mm
Top Length5.59 In. | 142.00mm
AutoclavableNo
Temp. Range-40 to 120ºC (-40 to 248ºF)
   

Item#:
ASAHEAT0P8

ILP Aluminum Sealing Film

Soft and impermeable aluminum sealing foils with medical grade acrylic adhesive.  Once applied, the seal adheres aggressively, forming a tight positive seal preventing evaporation of VOCs, sample loss in storage, drying, cross contamination, and reducing the risk of aerosols and pathogens venting.

  • Suitable for sealing all standard PCR plates, micro plates, and deep well blocks
  • Perfect for light sensitive samples
  • Easily pierced with single or multi-channel pipettors and probes
  • Withstands long term storage down to -80°C
  • Single tabbed backing paper removes easily; aluminum sheet resists rolling back

Specifications
 
Item #HSF50SF035AL
MaterialAluminum
Adhesive MaterialPolypropyleneAcrylic; 1.1mil
Liner MaterialNo LinerPolyester
ColorSilver
AlphanumericNone
Surface TreatmentNone
CertifiedDNase-/RNase-/Pyrogen-Free
Overall Height2.8 Mil1.4 Mil
Top Width3.27 In. | 83.00 mm
Top Length4.92 In. | 125.00 mm5.25 In. | 133.35 mm
AutoclavableNo
Max Temp.100ºC (212ºF)120ºC (248ºF)
Min Temp.-80ºC (-112ºF)
 

Item#:
ASADHESISEALFIL


ILP Polyester Sealing Film

Perfect for general sealing applications, prevention of cross-contamination, Elisa, incubation, and short-term storage. Our polyester films with acrylic adhesive are great general-purpose seals, ideal for sample protection. The acrylic adhesive offers a strong bond that seals tightly on polypropylene and polystyrene plates.

The paper backing of this film is scored on both ends to allow for two-handed (precise) placement on the plate. SF081PE Films have writing tabs for clear identification.

Specifications
 
Item #SF080PESF081PESF083PE
MaterialPET (polyethylene terephthalate)
Adhesive MaterialAcrylic; 1.1 MilAcrylic; 1.4 MilAcrylic; 1.1 Mil
Liner MaterialPolyesterPET
ColorClear White
AlphanumericNone
CertifiedDNase-/RNase-/Pyrogen-Free
Overall Height3.1 Mil3.9 Mil5.9 Mil
Top Width3.13 In. | 79.38 mm3.22 In. | 82.00 mm
Top Length5.75 In. | 146.05mm5.43 In. | 138.00mm
AutoclavableNo
Temp. Range- 40 to 120ºC (-40 to 248ºF)
 

Item#:
ASADHESIVEPOLSTER31


ILP Aerobic Seal Sealing Film


Non-woven Rayon, acrylic adhesive, breathable, 4.9 Mil – Sterile


Breathable sealing film made from non-woven rayon with an acrylic adhesive. Designed for aerobic applications, this 4.9 mil film allows gas exchange while maintaining a sterile barrier. Ideal for cell culture and other assays requiring ventilation.

 

Specifications
 
MaterialNon-woven Rayon Acrylic
Adhesive MaterialAcrylic; 1.1 Mil
Liner MaterialPaper
ColorWhite
AlphanumericNone
CertifiedDNase-/RNase-/Pyrogen-Free
Overall Height4.9 Mil
Adhesive ThicknessAcrylic; 1.1 Mil
Top Width3.22 In. | 82.00 mm
Top Length6.06 In. | 154.00 mm
AutoclavablePre-Sterilized
Max Temp.80ºC (176ºF)
Min Temp.-20ºC (-4ºF)
 

Item#:
ASADHESEALFLALM14


ILP Polyolefin Sealing Film 

  • Optical Seal Adhesive Sealing Film
  • Polyolefin 2.8 mil Ultra-clear for qPCR
  • 50 Films/Pack, 10 Packs/Case 

Incredible optical clarity, non-absorbing, and non-fluorescing properties of these films make them ideally suited for Real Time PCR (qPCR) and optical assay work. Featuring an inert, ultra-clear, and strong encapsulated silicone adhesive that provides extraordinary performance in demanding applications.


Encapsulated silicone greatly reduces the risk of sample contamination due to exposure to adhesive. Once the film is pressed onto the plate, the raised portion of the well penetrates the encapsulation, and a tight seal is formed on just that surface (not over the sample). This silicone seal adheres aggressively, preventing evaporation and lessening the possibility of “Edge Effect”.


The plasticized backing of this film is scored on both ends to allow for two-handed (precise) placement on the plate. Both film and adhesive maintain incredible clarity and are the choice for highly demanding manual and automated processes.

 

Specifications
 
MaterialPET (polyethylene terephthalate)
Adhesive MaterialEncapsulated Silicone; 2.0 Mil
Liner MaterialPolyester
ColorClear
AlphanumericNone
Surface TreatmentNone
CertifiedDNase-/RNase-/Pyrogen-Free
Overall Height2.8 Mil
Overall Thickness2.8 Mil
Adhesive ThicknessEncapsulated Silicone; 2.0 Mil
Top Width3.06 In. | 77.80 mm
Top Length5.56 In. | 141.27 mm
AutoclavableNo
Max Temp.100ºC (212ºF)
Min Temp.-70ºC (158ºF)
 

Item#:
ASADHESIVEPOLFIN28


ContainerSeal Sealing Tape

 

ContainerSeal is a sealing tape designed for the vast range of bottles and containers used in laboratory applications. Its unique elastomeric characteristics allow it to stretch and conform around the irregular perimeters of containers lids and covers to form a tight seal. ContainerSeal will block water vapor loss, reduce the rate of gas exchange and prevent the entry of contaminants and can be easily removed from most surfaces without leaving adhesive residue.

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

  

Item#:
ASSEAL1

FilmStrips

For Sealing Only One 8-well Row of a 96-well Plate.

Designed for use with either 1×8 strip-well ELISA plates or standard 96-well plates where rows must be selectively protected or accessed. Ideal for COVID-19 testing to seal a row of 8 wells after swabs are deposited into a deep-well plate.
  • Certified DNase- & RNase- free
  • A pliable polypropylene film minimizes aerosols upon removal
  • Each sheet contains 8 strips on a continuous liner for ease of use
  • Apply individually or two-at-a-time
  • Use as a secondary film to seal previously pierced wells or to prevent accidental pipetting
Applications
  • General laboratory use
  • Incubation
  • ELISA
Temp. Range
  • -40°C to +120°C

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

Item#:
AS1X8FILMSTRIPS

Plate-Sealing Roller

Application: Plate-sealing

Material:
Rubber, metal

The plate-sealing roller features a smooth spinning, thermoplastic elastomer sealing surface with a durable plated metal handle.

  • Reusable, autoclavable
  • Provides a large 4 inch (10.16 cm) wide sealing surface
  • A 10 minute or greater dwell me at room temperature before processing increases the film-to-plate bond

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

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