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 2017:
| Location | Country | Instruments | Month in 2017 | Julian days |
| Toronto | Canada | January | ||
| Hohenpeissenberg | Germany | May | ||
| Lindenberg | Germany | May | ||
| Poprad_Ganovce | Slovakia | May | ||
| El_Arenosillo | Spain | May | ||
| Taipei | Taiwan | June | ||
| Hradec_Kralove | Czech_Republic | June | ||
| Lampedusa | Italy | July | ||
| UofRome | Italy | July | ||
| Arosa | Switzerland | July | ||
| Aosta | Italy | July | ||
| Anmyeondo | Korea | August | ||
| Alomar | Norway | August | ||
| Oslo | Norway | August | ||
| Beijing | China | October | ||
| Mauna_Loa | USA | October | ||
| Paramaribo | Suriname | November |