DMAC35, based on research of Risberg and van Ooij, recommends to replace UPTD (OTU) by ESOT to monitor hyperoxic exposure in diving. However, Oxygen Toxicity Units (UPTD) have been in use for over 50 years to predict whole body oxygen toxicity and not only pulmonary oxygen toxicity.

For now it seems wise to follow both units, so future experience will show which unit is to be preferred (or maybe both?).

The aid of a simple to use calculator that we developed may help in this matter for ANY decompression or treatment table.

OTU-ESOT Calculator  150.-- Euro ex 9% VAT

How to order:

 1) Mail your name and address  to info@dadcodat.nl or

     use the  contact form

 2) Make your payment  to DadCoDat,

      IBAN: NL83 INGB0655911847          BIC: INGBNL2A

You will be invited to download the program from WeTransfer.

The password will be sent to you by email or if preferred by PostNL