Find your ideal sample storage tube: Tube Wizard
Sample Storage Caps

Screw Caps with External Thread

Micronic Screw Caps with External Thread provide a secure closure for long-term sample storage at ultra-low temperatures or a safe sealing during the transportation of your samples. To meet the diverse needs of different researchers, Micronic offers a range of sealing solutions. Tubes with External Thread can be sealed with a standard Screw Cap or the Screw Cap IG optimized for automated handling.

Benefit from our promotion where you receive 1 case of caps for free with the purchase of 5 cases in different colours!

Valid from July 1st, 2025 until September 30th, 2025.

Read our product quality information
Our solutions

For Tubes with external thread

The Screw Caps for tubes with an external thread in 96-well format are compatible with Micronic tubes in the volumes 0.30ml, 0.40ml, 0,75ml, 0.80ml, 1.40ml and 2.00ml. The Screw Caps for tubes with an external thread in 48-well format are compatible with the 1.00ml, 2.00ml, 3.00ml and 4.00ml tubes from Micronic, the Screw Caps for tubes with an external thread in 24-well format are compatible with the 1.50ml, 3.00ml, 3.50ml and 6.00ml tubes from Micronic.

The Micronic Screw Caps for tubes with external thread have a triple start thread for the most optimal sealing quality, ensuring long-term sample preservation and storage at ultra-low temperatures. To prevent the Screw Cap from overturning – manually or mechanically – the screw cap is designed with a unique lock when sealed (no cap or tube exhaustion). For better handling, the screw cap also has an outside grip. The Micronic Screw Caps for tubes with an internal and external thread are available in 12 different colors.

The Screw Cap IG has an improved gripping for both manually and automated handling, the newly designed lead-in on top of the Screw Cap ensures a better tube placement and the lower height makes storage (without rack cover) in automated stores more efficient. The Screw Cap IG is compatible with the standard tubes with external thread (non-hybrid).

features & benefits

Screw Caps with External Thread

Automation
Automation friendly
Ultra-low temperature
Screw caps are ideal for sample storage at ultra-low temperatures
Compatibility
Compatible with Micronic Screw Cap with External Thread tubes in 96-well, 48-well and 24-well format
Resistancy
Resists chemical solvents
RNASE/DNASE/PYROGENS
Free of any detectable RNase or DNase contamination and the endotoxin level of produced and packaged labware is limited to an acceptable minimum (< 0.01 EU/ml)
CLASS 7 CLEAN ROOM
Micronic labware is manufactured and assembled in-house in a NEN-EN-ISO14644-1 Class 7 certified clean room environment
Specifications

Product information

Parameter Screw Cap for Tubes with External Thread
Material PE
Cap height 7.0mm
Chemical resistance ++
Temperature range Vapor phase LN2 to +100°C
Parameter Screw Cap IG for Tubes with External Thread
Material PE
Cap height 5.8mm
Chemical resistance ++
Temperature range Vapor phase LN2 to +100°C
Testimonials

What our customers say

“I chose Micronic because of the space saving 96-well rack format; more sample material could fit in the freezer compared to products from other companies. The screw cap also stays securely in place during long-term storage in -80°C."

Read full testimonial

“We used the 6.00ml externally threaded tubes with 2D Data-Matrix code on the bottom. It was critical for us to have a good sample ID, so the 2D Data-Matrix code on the bottom and the 1D Rack barcode helped us to keep good track of our samples.”

Read full testimonial

"We are very happy with the tubes of Micronic, it is truly more efficient and space saving than we had in the past. Next to that, the fact that the tube positions are laser-etched in the rack itself is very helpful. We always know where the A1 tube is located."

Read full testimonial

“After a comprehensive evaluation of commercially available consumables we selected Micronic 0.75ml and 1.4ml tubes together with screw caps and Roborack storage racks to provide high integrity, long-term storage of our human blood, serum and plasma samples at –80°C."

Read full testimonial

The Nees Institute for Plant Biodiversity selected Micronic 0.50ml 2D Data-Matrix coded tubes together with TPE caps to provide high integrity, long-term storage of their samples at -80°C.

Read full testimonial
PhD candidate at LUMC Nienke van Rein chose Micronic because of the space saving 96-well rack format
Jessa Ziekenhuis
LUMC (NL)
article numbers

Ordering information

Article Number Description Unit Size Case Size
MP53825 Screw Caps for externally threaded tubes in 96-well format - Transparent 960 caps 1
MP53820 Screw Caps for externally threaded tubes in 96-well format - Grey 960 caps 1
MP53801 Screw Caps for externally threaded tubes in 96-well format - White 960 caps 1
MP53804 Screw Caps for externally threaded tubes in 96-well format - Yellow (Promo Deal) 960 caps 1
MP53800 Screw Caps for externally threaded tubes in 96-well format - Orange (Promo Deal) 960 caps 1
MP53802 Screw Caps for externally threaded tubes in 96-well format - Red (Promo Deal) 960 caps 1
MP53809 Screw Caps for externally threaded tubes in 96-well format - Purple 960 caps 1
MP53821 Screw Caps for externally threaded tubes in 96-well format - Pink (Promo Deal) 960 caps 1
MP53803 Screw Caps for externally threaded tubes in 96-well format - Blue (Promo Deal) 960 caps 1
MP53806 Screw Caps for externally threaded tubes in 96-well format - Light Blue 960 caps 1
MP53823 Screw Caps for externally threaded tubes in 96-well format - Light Green (Promo Deal) 960 caps 1
MP53805 Screw Caps for externally threaded tubes in 96-well format - Green 960 caps 1
MP53822 Screw Caps for externally threaded tubes in 96-well format - Black 960 caps 1
Article Number Description Unit Size Case Size
MP53870 Screw Caps IG for externally threaded tubes in 96-well format - Transparent 960 caps 1
MP53871 Screw Caps IG for externally threaded tubes in 96-well format - Grey 960 caps 1
MP53872 Screw Caps IG for externally threaded tubes in 96-well format - White 960 caps 1
MP53873 Screw Caps IG for externally threaded tubes in 96-well format - Yellow (Promo Deal) 960 caps 1
MP53874 Screw Caps IG for externally threaded tubes in 96-well format - Orange (Promo Deal) 960 caps 1
MP53875 Screw Caps IG for externally threaded tubes in 96-well format - Red (Promo Deal) 960 caps 1
MP53876 Screw Caps IG for externally threaded tubes in 96-well format - Pink (Promo Deal) 960 caps 1
MP53877 Screw Caps IG for externally threaded tubes in 96-well format - Purple 960 caps 1
MP53878 Screw Caps IG for externally threaded tubes in 96-well format - Blue (Promo Deal) 960 caps 1
MP53879 Screw Caps IG for externally threaded tubes in 96-well format - Light Blue 960 caps 1
MP53880 Screw Caps IG for externally threaded tubes in 96-well format - Light Green (Promo Deal) 960 caps 1
MP53881 Screw Caps IG for externally threaded tubes in 96-well format - Green 960 caps 1
MP53882 Screw Caps IG for externally threaded tubes in 96-well format - Black 960 caps 1
Article Number Description Unit Size Case Size
MP53425 Screw Caps for externally threaded tubes in 48-well format - Transparent 480 caps 1
MP53420 Screw Caps for externally threaded tubes in 48-well format - Grey 480 caps 1
MP53401 Screw Caps for externally threaded tubes in 48-well format - White 480 caps 1
MP53404 Screw Caps for externally threaded tubes in 48-well format - Yellow (Promo Deal) 480 caps 1
MP53400 Screw Caps for externally threaded tubes in 48-well format - Orange (Promo Deal) 480 caps 1
MP53402 Screw Caps for externally threaded tubes in 48-well format - Red (Promo Deal) 480 caps 1
MP53421 Screw Caps for externally threaded tubes in 48-well format - Pink (Promo Deal) 480 caps 1
MP53409 Screw Caps for externally threaded tubes in 48-well format - Purple 480 caps 1
MP53403 Screw Caps for externally threaded tubes in 48-well format - Blue (Promo Deal) 480 caps 1
MP53406 Screw Caps for externally threaded tubes in 48-well format - Light Blue 480 caps 1
MP53423 Screw Caps for externally threaded tubes in 48-well format - Light Green (Promo Deal) 480 caps 1
MP53405 Screw Caps for externally threaded tubes in 48-well format - Green 480 caps 1
MP53422 Screw Caps for externally threaded tubes in 48-well format - Black 480 caps 1
Article Number Description Unit Size Case Size
MP53525 Screw Caps for externally threaded tubes in 24-well format - Transparent 240 caps 1
MP53520 Screw Caps for externally threaded tubes in 24-well format - Grey 240 caps 1
MP53501 Screw Caps for externally threaded tubes in 24-well format - White 240 caps 1
MP53504 Screw Caps for externally threaded tubes in 24-well format - Yellow (Promo Deal) 240 caps 1
MP53500 Screw Caps for externally threaded tubes in 24-well format - Orange (Promo Deal) 240 caps 1
MP53502 Screw Caps for externally threaded tubes in 24-well format - Red (Promo Deal) 240 caps 1
MP53521 Screw Caps for externally threaded tubes in 24-well format - Pink (Promo Deal) 240 caps 1
MP53509 Screw Caps for externally threaded tubes in 24-well format - Purple 240 caps 1
MP53503 Screw Caps for externally threaded tubes in 24-well format - Blue (Promo Deal) 240 caps 1
MP53506 Screw Caps for externally threaded tubes in 24-well format - Light Blue 240 caps 1
MP53523 Screw Caps for externally threaded tubes in 24-well format - Light Green (Promo Deal) 240 caps 1
MP53505 Screw Caps for externally threaded tubes in 24-well format - Green 240 caps 1
MP53522 Screw Caps for externally threaded tubes in 24-well format - Black 240 caps 1
Contact

Interested in this product?

We're here to help you with any questions you might have
fill out the form below
  • This field is hidden when viewing the form
  • This field is for validation purposes and should be left unchanged.
Related products

More interesting products