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Chemotechnique Diagnostics, Malmo, Sweden, is recognized around the world as a leader in providing highest quality haptens and accessories to the patch testing medical specialty. Only Chemotechnique's 550 hapten portfolio is approved by Health Canada so practitioners can perform their patch testing with confidence. Chemotechnique's patented leak free "I-Q" chamber is utilized on the most advanced and proven IQ-ULTRA and the water resistant IQ-ULTIMATE chamber formats. Dormer Laboratories Inc., Toronto, Ontario, is Chemotechnique's North American Distributor.
Chemotechnique Diagnostics - the trusted name in patch testing!

NIK-L-BLOK TM Barrier Cream

  • Traps Nickel Ions
  • Traps Cobalt Ions
  • Fragrance Free
Clinically Tested & Proven Effective!
Protects against eczema induced by nickel & cobalt!

Meetings & Conventions

Year 2021
American Academy of Dermatology

Canadian Dermatology Association / Association canadienne de dermatologie
2021 - Part 1: Vancouver, BC (also virtually) - June 25 & 26
2021 - Part 2: Virtual Meeting - October 23

American Contact Dermatitis Society
Fall Meeting
Virtual meeting on Thursday, Sept. 30th, 2021
Dormer will sponsor a 30 minute presentation from 8.15am to 8.45am by Denis Sasseville, MD -- 30 years of Patch Testing Riddles

Year 2022

33rd Annual Meeting of the
American Contact Dermatitis Society
March 24th, 2022, Boston, MA (Location to be determined)

80th Annual Meeting of
American Academy of Dermatology
March 25-29, 2022,Boston Convention Center
Boston, MA


Effective February 1st, 2021 attached changes have been made

Effective October 15th, 2021: E-023 ETHYL CYANOACRYLATE 10% PET. will be temporarily unavailable due to a raw material supply interruption. Current orders for AC-1000 American Core Series and MA-1000 (Meth) Acrylate Adhesives Series will not have this hapten included. Customers will be notified when this hapten is once again available.

Effective October 12th, 2021: C-059 Carmine 2.5% Pet. is now available and included in the AC-1000 American Core Series in position #82.

Effective September 28th, 2021: P-032 Pristinamycin 10% pet is no longer available. The CAD-1000 Series will no longer have this hapten

Hydrogen Peroxide H-006 is no longer available

Lead(II)acetate trihydrate 0.5%/aq (L-007) removed from the Metal Series. An unanticipated raw material alteration has rendered the possibility of producing Lead(II)acetate trihydrate 0.5%/aq (L-007) to an adequate standard impossible. As a result we have removed this hapten from our portfolio and from the Metal Series MET-1000 immediately. Please note that the Metal Series will still include a hapten marker for lead, L-008 Lead(II)chloride 0.2%/aq.

The hapten DOR-686 Methyldibromo Glutaronitrile + phenoxyethanol (EUXYL K ) is no longer available. However the two components of this hapten mixture are available as D-049E Methyldibromo glutaronitrile (0.5% pet) and P-025 2-Phenoxyethanol (1% pet)  

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