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Top rated labware caps

AI-generated summary · updated July 27, 2026 · verify details before purchase.

  1. Best overall

    Corning PYREX 1L Media Storage Bottle, GL 45 Cap, 1395-1L

    $45-$60

    High-quality borosilicate glass bottle with robust GL 45 cap, ideal for media storage and general lab use.

    • Durable borosilicate glass
    • Leak-proof GL 45 cap
    • Widely compatible
    • Expensive
    • Glass can break if dropped
  2. Best value

    DURAN GL 45 Threaded Bottle, 1000 mL, with GL 45 PP Screw Cap

    4.7/5 $35-$50

    Schott DURAN bottle with GL 45 polypropylene cap, offering excellent chemical resistance and clear graduation.

    • Excellent chemical resistance
    • Clear graduation marks
    • Autoclavable
    • Cap may leak if not tightened properly
    • Slightly less durable than PYREX
  3. Best budget pick

    Nalgene 2125-0004 4 oz Wide-Mouth Bottle, HDPE

    4.5/5 $5-$10

    Inexpensive HDPE bottle with wide mouth, suitable for storing samples and reagents where glass is not required.

    • Very affordable
    • Lightweight and unbreakable
    • Good chemical resistance
    • Not autoclavable
    • Cap may not seal completely
  4. Best for media storage

    Kimble Chase Glass Media Storage Bottle with GL 45 Cap, 500 mL

    $25-$35

    Borosilicate glass bottle with GL 45 cap, designed for media storage and sterile applications.

    • Borosilicate glass
    • Screw cap with PTFE liner
    • Autoclavable
    • Limited size selection
    • Pricey for smaller volumes
  5. Best small size

    Corning 1395-250 250 mL PYREX Media Storage Bottle, GL 45 Cap

    4.8/5 $25-$35

    250 mL PYREX bottle with GL 45 cap, great for storing media or buffers in smaller volumes.

    • Compact size
    • High-quality glass
    • Consistent sealing
    • Small capacity
    • Similar price to larger options
  6. Best for large volume

    Duran Group Bottle, Laboratory, GL 45, 2000 mL

    $60-$80

    2-liter Schott DURAN bottle with GL 45 cap, ideal for bulk media or solution storage.

    • Large capacity
    • Robust construction
    • Clear graduation
    • Heavy when full
    • Expensive
  7. Best disposable option

    Nalgene 362005-0125 HDPE Laboratory Bottle, 125 mL

    4.6/5 $4-$7

    Disposable HDPE bottle with leak-proof cap, perfect for field sampling or short-term storage.

    • Low cost per unit
    • Leak-proof design
    • Lightweight
    • Not reusable for long term
    • Not autoclavable
  8. Best for hazardous materials

    Wheaton HDPE Bottle with Linerless Cap, 500 mL

    $10-$15

    High-density polyethylene bottle with linerless cap, offering good chemical resistance for storing acids and bases.

    • Good chemical resistance
    • Linerless cap reduces contamination
    • Durable
    • Not for high-temperature use
    • Cap may be difficult to tighten

Buying advice

When selecting a labware cap, consider the chemical compatibility, temperature resistance (autoclavability), and seal integrity. GL 45 caps are industry standard for glass media bottles, while HDPE caps suit plastic bottles for general storage. Evaluate cost per use for disposable vs. reusable options.

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