Boomer
October 2nd 05, 03:16 PM
Recently we have been worried about reefers using and assuming that the refracts that ever
one has been using in this hobby should be off - 1.5 ppt or -.15 % or - .0015 SG. We have
been telling people in short to raise the seamix "15 units" higher to = 35 ppt ( to read
36.5), 3.5 ( to read 3.65 and 1.0265 A( to read 1,0280).
These tests have been completed on a number BUT the SAME brand refracts. These are the
ones on the below image. Low and behold, they should read these values on a good lab
refract and would need these adjustments but about 95 % of the ones reefers are using are
off from the factory that exact amount we are correcting for :lol:
So it appears that with the these Chinese refracts, zeroed to RO/DI water, that they are
right on when tested to a seawater std, when they should not be. So it reads 35 ppt, 3.5 %
or 1,0265 no adjustment is needed to our surprise. Just use as is :D
Note: This is only for these refracts !!
RHS-10ATC
http://www.instrument-china.com/images/32-t.gif
--
Boomer
Want to talk chemistry ? The Reef Chemistry Forum
http://www.reefcentral.com/vbulletin/index.php
Former US Army Bomb Technician (EOD)
Member; IABTI, NATEODA, WEODF, ISEE & IPS
If You See Me Running You Better Catch-Up
one has been using in this hobby should be off - 1.5 ppt or -.15 % or - .0015 SG. We have
been telling people in short to raise the seamix "15 units" higher to = 35 ppt ( to read
36.5), 3.5 ( to read 3.65 and 1.0265 A( to read 1,0280).
These tests have been completed on a number BUT the SAME brand refracts. These are the
ones on the below image. Low and behold, they should read these values on a good lab
refract and would need these adjustments but about 95 % of the ones reefers are using are
off from the factory that exact amount we are correcting for :lol:
So it appears that with the these Chinese refracts, zeroed to RO/DI water, that they are
right on when tested to a seawater std, when they should not be. So it reads 35 ppt, 3.5 %
or 1,0265 no adjustment is needed to our surprise. Just use as is :D
Note: This is only for these refracts !!
RHS-10ATC
http://www.instrument-china.com/images/32-t.gif
--
Boomer
Want to talk chemistry ? The Reef Chemistry Forum
http://www.reefcentral.com/vbulletin/index.php
Former US Army Bomb Technician (EOD)
Member; IABTI, NATEODA, WEODF, ISEE & IPS
If You See Me Running You Better Catch-Up