IOS Inc.
The Brewer experts
Important:
SETDATE: Automatic date correction in the OP_ST.### file before running the Brewer software. 
01.12.2005.
Calibration information tables. 09.12.2005.
How to find calibration information 25.01.2006.
Brewer operating software v3.76b 26.08.2008.
GWBasic: A help file. 12.12.2005.
Calibrations in 1993:
| Location | Country | Instruments | Month in 1993 | Julian days |
| Camborne | UK | February | ||
| Taipei | Taiwan | April | ||
| Chengkung | Taiwan | April | ||
| Ispra | Italy | July | ||
| Arosa | Switzerland | July | ||
| Kislovodsk | Russia | August | ||
| Oslo | Norway | August | ||
| Sestola | Italy | September | ||
| Izana | Spain | November |