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Kate, I don't like rules as to what gas goes first and what tanks go where -
that is IANTD bullshit. You either know or you specify what the gas is after
each number. See my section on gas mixing and tank marking at wkpp.org.
Forget anything you have ever heard other than this, and you will not make
any mistake.
For instance, if my tank says "11X65" , I know it is 11% oxygen because
there is no purpose in 11% helium. I don't make 20% helium mixes, either.
If the gas is nitrox, it merely needs the number and percent, like "35%".
If I am making a gas that has reasonable numbers for both gasses, I will
mark it something like "xxx helium, xxx oxygen" to make it perfectly clear.
This is encountered more in deco gases than in diving gasses, but if it is
close, like 35/30, you need to write 35 whatever and 30 whatever.
Don't make little rules that will kill you . This is like the IANTD insanity
of identifying gases by which side of the body they are on.
I knew right away what Karla was diving.
-----Original Message-----
From: Diverkate@ao*.co* [mailto:Diverkate@ao*.co*]
Sent: Saturday, February 16, 2002 9:45 PM
To: trey@ne*.co*
Subject: A potential danger re: standard deco thread
In a message dated 2/16/2002 8:05:56 PM Eastern Standard Time,
girvine@be*.ne* writes:
35/20 mix?!
George,
You might want to clarify that Karla described her mix in the wrong order
(O2 should be stated first, then helium), lest any beginners get the wrong
idea! If they see you ignoring that, they might start making the same
mistake. I'm not suggesting that you would be held responsible, but some
idiot following it blindly . . .
best regards,
Kathy
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<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Kate,=20
I don't like rules as to what gas goes first and what tanks go where - =
that is=20
IANTD bullshit. You either know or you specify what the gas is after =
each=20
number. See my section on gas mixing and tank marking at wkpp.org. =
Forget=20
anything you have ever heard other than this, and you will not make any=20
mistake.</FONT></SPAN></DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2>For=20
instance, if my tank says "11X65" , I know it is 11% oxygen because =
there is no=20
purpose in 11% helium. I don't make 20% helium mixes,=20
either.</FONT></SPAN></DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2>If the=20
gas is nitrox, it merely needs the number and percent, like=20
"35%".</FONT></SPAN></DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2>If I=20
am making a gas that has reasonable numbers for both gasses, =
I will=20
mark it something like "xxx helium, xxx oxygen" to make it =
perfectly clear.=20
This is encountered more in deco gases than in diving gasses, but if it =
is=20
close, like 35/30, you need to write 35 whatever and 30=20
whatever.</FONT></SPAN></DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2>Don't=20
make little rules that will kill you . This is like the IANTD insanity =
of=20
identifying gases by which side of the body they are =
on.</FONT></SPAN></DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2></FONT></SPAN><SPAN class=3D383252611-17022002><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D383252611-17022002><FONT face=3DArial
color=3D#0000ff =
size=3D2>I knew=20
right away what Karla was diving. </FONT></SPAN></DIV>
<BLOCKQUOTE>
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B>
Diverkate@ao*.co*=20
[mailto:Diverkate@ao*.co*]<BR><B>Sent:</B> Saturday, February 16,
2002 =
9:45=20
PM<BR><B>To:</B> trey@ne*.co*<BR><B>Subject:</B> A
potential danger =
re:=20
standard deco thread<BR><BR></FONT></DIV><FONT =
face=3Darial,helvetica><FONT=20
size=3D2>In a message dated 2/16/2002 8:05:56 PM Eastern Standard =
Time,=20
girvine@be*.ne* writes:<BR><BR><BR></FONT><FONT lang=3D0=20
style=3D"BACKGROUND-COLOR: #ffffff" face=3DArial color=3D#0000ff =
size=3D2=20
FAMILY=3D"SANSSERIF">
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px"=20
TYPE=3D"CITE">35/20 mix?!</FONT><FONT lang=3D0 =
style=3D"BACKGROUND-COLOR: #ffffff"=20
face=3DArial color=3D#000000 size=3D3=20
FAMILY=3D"SANSSERIF"><BR></BLOCKQUOTE><BR></FONT><FONT
lang=3D0=20
style=3D"BACKGROUND-COLOR: #ffffff" face=3DArial color=3D#000000 =
size=3D2=20
FAMILY=3D"SANSSERIF">George,<BR><BR>You might want to clarify that =
Karla=20
described her mix in the wrong order (O2 should be stated first, then =
helium),=20
lest any beginners get the wrong idea! If they see you ignoring =
that,=20
they might start making the same mistake. I'm not suggesting =
that you=20
would be held responsible, but some idiot following it blindly . . .=20
=
<BR><BR> =
; =
&=
nbsp; &n=
bsp; =20
best=20
=
regards,<BR> &=
nbsp; &n=
bsp; &nb=
sp; &nbs=
p; =
;=20
Kathy<BR><BR></BLOCKQUOTE></FONT></FONT></BODY></HTML>
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