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Buy 2 packs of sorbent tubes – get a third pack free

We are offering ‘buy two packs – get a third free’ on our sorbent tubes listed below.

When buying sorbent tubes from Markes, you can rest assured that you’re buying the best available:

  • Every tube undergoes stringent quality checks.

  • Tubes are manufactured to ISO 9001-accredited procedures.

  • Application-specific tubes are packed with an optimised sorbent combination.

All tubes are etched with a unique ID number and barcode so they are easy to use and track. Tubes available include our broad range of glass, stainless-steel and inert-coated tubes.

This is a time-limited offer that ends on 31 October 2021.

Please use promotion code 'TUBESDEAL21' when placing your order.

Offer details

Valid for the following glass/stainless/inert tubes; including unconditioned, conditioned, tagged, SafeLok and custom etched tubes:

Industry-standard-size tubes

  • Tenax TA
  • Universal
  • Universal 1000
  • Air toxics
  • Air toxics 1000
  • Bio-monitoring
  • Carbograph 5TD
  • Graphitised carbon
  • Graphitised carbon universal
  • Hydrophobic
  • Material emissions/Soil gas
  • PAH
  • SVOC

And the following non-standard tubes:


Terms & Conditions:

  1. Buy two packs of tubes and receive a third pack for free.
  2. Tubes must be of the same type.
  3. Offer is valid until 31 October 2021.
  4. Offer applies to tubes listed above only.
  5. Tubes are sold in packs of 10 (TD Mini-tubes in packs of 5)
  6. Tubes must be all of the same type with no mixing or substitutions (same p/n).
  7. Offer can only be applied to new orders.
  8. Use of the promotion code is required to receive the offer.
  9. The promotion code may be used multiple times (over multiple orders or within a single order) until the offer end date.
  10. Markes reserves the right to withdraw this offer without notice at any time.
  11. There is no cash alternative.
  12. The offer is applicable to orders placed directly with Markes International Ltd, Markes International Inc., Markes International GmbH or Schauenburg Analytics Solutions (Shanghai) Co., Ltd via phone, fax or email.
  13. An equivalent offer applies for online orders placed on where the code TUBESDEAL21 will apply a 33% discount to orders of 3 packs of the same tube.
  14. The offer cannot be used in conjunction with any other offer.