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 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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General Purpose Sealing Film

For More Secure Seal to Minimize Evaporation.
 
General Purpose polypropylene films offer superior barrier properties to minimize evaporation and prevent well-to-well contamination. Ideal for use with polypropylene plates.
  • Certified DNase- & RNase- free
  • Features good chemical resistance
  • Provides a very secure seal to minimize evaporation, but is slightly harder to remove than SealPlate films
  • Less rigid polypropylene film reduces aerosols upon removal
  • Specially formulated adhesive minimizes plate residue
  • Can be used as a temporary seal while awaiting further processing
Applications
  • General laboratory use
  • Short-term storage
  • Incubation
  • ELISA
Temp. Range
  • -40°C to +120°C

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

SealPlate® Sealing Film

Industry Standard for Sample Protection.
 
SealPlate® minimizes evaporation, prevents well-to-well contamination and spillage. Eliminates the “edge effect” which can occur with plate lids (e.g. greater evaporation in the outside plate wells).

  • Provides a secure seal and is easy to remove
  • Rigid polyester film features good clarity and easy handling
  • Can be used as a temporary economical seal while awaiting further processing
  • Features two end-tabs with perforations

Applications

  • General laboratory use
  • Short-term storage
  • Incubation
  • ELISA
Temp. Range
  • -40°C to +120°C

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

AlumaSeal® II Easy-to-pierce Aluminum Foil Seal
 
Easy-to-pierce, Medical Grade Acrylic Adhesive. 

AlumaSeal® II is a soft, non-permeable aluminum foil with a strong, medical-grade acrylic adhesive. Compared to other aluminum foils, AlumaSeal® II  has less tendency to roll back on itself when removing the backing paper.
  • Certified DNase- & RNase- free
  • Excellent chemical resistance (e.g. DMSO)
  • Easily pierceable with single or multichannel pipettors and robotic probes
  • 1.4mil conformable aluminum foil allows visual verification of the seal’s security around each well
Applications
  • PCR
  • Long-term storage
  • Light sensitive assays
  • Robotics
Temperature Range
  • -80°C to +120°C
Helpful Tips
  • End-tab removal before thermal cycling is highly recommended
  • Remove diagonally from a corner to prevent tearing

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

FoilSeal

Extra thick aluminum foil minimizes shredding upon removal
 
FoilSeal features a specially formulated adhesive that provides an excellent seal to minimize evaporation, reduce cross-contamination and prevent spillage.

Application: PCR, light sensitive assays and robotics
Temp. Range: -20°C to +120°C

Universal fit for all plate types (e.g. flat-top, raised-rim and non-skirted); the smaller dimensions and rounded corners result in no plate overhang for robotics applications.
  • Certified DNase- & RNase- free
  • Pierceable with a pipet tip or robotic probe for direct sample recovery
  • 2.0mil aluminum foil removes easily without shredding or tearing
  • The conformable nature of foil allows for the visual verification of the seal’s security around each well
  • Not recommended for long-term storage
Helpful Tips
  • Remove diagonally from a corner to prevent tearing

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

ThermalSeal® RTS Silicone Sealing Film

 Optically Clear, Pressure Activated, Non-tacky Silicone.
 
The silicone adhesive is non-tacky until pressure is applied to the sealing surface which then creates a secure bond around the wells and perimeter of the plate. Also ideal for dry samples (e.g. soil, seeds, insects, etc.) because the non-activated adhesive above the wells remains non-tacky. A roller or sealing paddle is highly recommended for use with this product to ensure consistent and adequate pressure is applied during the sealing process. 

  • Provides an extremely strong seal to minimize evaporation
  • Certified DNase- & RNase- free
  • Chemically resistant to DMSO, acetonitrile, and methanol
  • Ideal for use with flat-top, raised-rim and non-skirted PCR plates
  • High optical clarity and low auto-fluorescence
  • Available in roll format for automation: ThermalSeal® RTS Roll-Seal
  • A complimentary sealing paddle is included in each box

Applications

  • qPCR
  • Long-term storage
  • Protein crystallography
  • HPLC
Temp. Range
  • -80°C to +105°C

Helpful Tips

  • Sufficient pressure must be applied to activate the silicone adhesive
  • Multiple swipes of the sealing paddle in both directions is highly recommended
  • A 10 minute or greater wait period before thermal cycling increases the film-to-plate bond

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


AdvanceSeal Sealing Film

 

AdvanceSeal Sealing Film offers high-performance sealing solutions for laboratory microplates, designed for use with automated roll format heat seal applicators. Available in two configurations, pierceable foil heat seal and peelable transparent heat seal, this film is ideal for demanding applications such as PCR, compound storage, and high-throughput screening.

 

Pierceable Foil Heat Seal

 

Engineered for automated workflows, the pierceable foil heat seal delivers a hermetic seal that protects sample integrity by being highly impermeable to light, gas, and moisture. Its non-adhesive design ensures that no residue is left on pipette tips, reducing the risk of cross-contamination.

 

Key Features

  • Pierceable with pipette tips or robotic probes
  • Ideal for low-volume and sensitive samples
  • Strong microbial barrier for sterile applications
  • Excellent chemical resistance (e.g. DMSO)
  • Free of detectable RNase, DNase, human DNA, PCR inhibitors, and endotoxins (PCR Certified) 

Peelable Transparent Heat Seal

 

The peelable transparent heat seal provides superior evaporation protection and is easily removed without leaving residue, making it suitable for workflows that require easy sample access post-processing.

 

Key Features

  • Clear, peelable design allows for visual inspection of samples
  • Easy removal without damaging the plate surface
  • Effective in temperature ranges from -80°C to +105°C
  • Compatible with polypropylene, polycarbonate/polypropylene, and polystyrene plates
  • PCR Certified: Free of detectable DNase, RNase, and human DNA
  • Compatible with leading heat sealers:
  • Kbiosystems, Porvair®, Azenta, ThermoFisher®, Agilent PlateLoc                            

Ideal For

  • PCR and qPCR
  • Sample storage (short- and long-term)
  • Compound screening
  • Automation and robotic systems

Storage Recommendation
 

For optimal shelf life and performance, store at 137°F ±10°F with 50% relative humidity.
 

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

Disclaimer

Kbiosystems, Porvair®, Azenta, Thermo Fisher Scientific®, and Agilent PlateLoc™ are trademarks of their respective owners. AdvanceSeal™ Sealing Film is a third-party product designed for use with instruments from these manufacturers. These companies do not manufacture, sponsor, or endorse AdvanceSeal™ products and are not affiliated with them in any way.
 

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
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