(o.p.)

English translation: CP is a type of pH-meter

13:47 Jun 12, 2005
English language (monolingual) [PRO]
Tech/Engineering - Chemistry; Chem Sci/Eng / pH -value
English term or phrase: (o.p.)
The list of ingredients of a so-called 'stain roller' (a roll-on stain remover)includes several items; below the pH-value is given, accompanied by a mysterious abbreviation:
pH-value: ca 7.7 (o.p.). As the document is a scan of a (rather) poor xerox copy, the unheard-of-around-here- abbreviation may actually be (c.p.), not (o.p.). May I ask you to help me?
tabor
Poland
Local time: 07:52
Selected answer:CP is a type of pH-meter
Explanation:
If it is CP and not OP, then it could be referring to the type of pH-meter used to take the measurement.

Please see this reference:

EJPAU 2002. CAIS-SOKOLIÑSKA D., PIKUL J., DANKÓW R. QUALITY AND ...
Active acidity was measured in the yogurt using pH-meter type CP - 315 by Elmetron,
provided with combined electrode type ... 7.8 cA. 60 : 40. 7.7 cC ...
www.ejpau.media.pl/series/ volume5/issue2/food/art-04.html


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Note added at 1 hr 38 mins (2005-06-12 15:25:53 GMT)
--------------------------------------------------

CP could also be the unit of viscosity.
CP = centi Poise

... This parameter is the viscosity n. That is, n = s / y. The unit of viscosity is the poise. Kinematic viscosity v is often used and is defined as v= n ...

www.hanssummers.com/electronics/viscometer/theory.htm

--------------------------------------------------
Note added at 1 hr 43 mins (2005-06-12 15:30:46 GMT)
--------------------------------------------------

The common metric unit of absolute viscosity is the poise.

For convenience, the CentiPoise (cP) — one one-hundredth of a poise — is the unit customarily used.

http://www.synlube.com/viscosit.htm
Selected response from:

Balasubramaniam L.
India
Local time: 11:22
Grading comment
Balasubramaniam, I thank you so much for your help and I hope you'll forgive me for being such a nasty lategrader. The mystery has not been solved so far (and I don't think it's ever going to be), but your suggestion (a pH-meter type) appears to be the most convincing. I am really grateful to aira07 and nickele who spared their time to help me. Good luck to you.
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
3CP is a type of pH-meter
Balasubramaniam L.
1CP = chemically pure
aira07


  

Answers


1 hr   confidence: Answerer confidence 3/5Answerer confidence 3/5
CP is a type of pH-meter


Explanation:
If it is CP and not OP, then it could be referring to the type of pH-meter used to take the measurement.

Please see this reference:

EJPAU 2002. CAIS-SOKOLIÑSKA D., PIKUL J., DANKÓW R. QUALITY AND ...
Active acidity was measured in the yogurt using pH-meter type CP - 315 by Elmetron,
provided with combined electrode type ... 7.8 cA. 60 : 40. 7.7 cC ...
www.ejpau.media.pl/series/ volume5/issue2/food/art-04.html


--------------------------------------------------
Note added at 1 hr 38 mins (2005-06-12 15:25:53 GMT)
--------------------------------------------------

CP could also be the unit of viscosity.
CP = centi Poise

... This parameter is the viscosity n. That is, n = s / y. The unit of viscosity is the poise. Kinematic viscosity v is often used and is defined as v= n ...

www.hanssummers.com/electronics/viscometer/theory.htm

--------------------------------------------------
Note added at 1 hr 43 mins (2005-06-12 15:30:46 GMT)
--------------------------------------------------

The common metric unit of absolute viscosity is the poise.

For convenience, the CentiPoise (cP) — one one-hundredth of a poise — is the unit customarily used.

http://www.synlube.com/viscosit.htm

Balasubramaniam L.
India
Local time: 11:22
Works in field
Native speaker of: Native in HindiHindi
PRO pts in category: 16
Grading comment
Balasubramaniam, I thank you so much for your help and I hope you'll forgive me for being such a nasty lategrader. The mystery has not been solved so far (and I don't think it's ever going to be), but your suggestion (a pH-meter type) appears to be the most convincing. I am really grateful to aira07 and nickele who spared their time to help me. Good luck to you.

Peer comments on this answer (and responses from the answerer)
neutral  aira07: I don't think viscosity and pH-values are related... Ah, point taken. But can a pH-value be measured in cp?
3 hrs
  -> In fact, just the opposite. The viscosity of the stain remover could be more or less, depending on whether it is acidic or basic, in other words, what its pH value is.
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4 hrs   confidence: Answerer confidence 1/5Answerer confidence 1/5
CP = chemically pure


Explanation:
Just a guess, judging from the context. Of course, I have no idea if chemically pure calcium has a pH of 7.7...

aira07
Local time: 22:52
Native speaker of: Native in JapaneseJapanese, Native in EnglishEnglish

Peer comments on this answer (and responses from the answerer)
neutral  Balasubramaniam L.: In that case it would have been Ca, not ca. Also the question is not about ca. Also pH is the number of H+ ions released in a solvent. Pure Ca will have no H+ ions to release. :-)
8 hrs
  -> Ah, yes. ca, not Ca. And if it were calcium, it would have to be Ca+. Or is it Ca2+? It's been a while since I took chemistry...

neutral  nickele (X): I agree with Bala, a pH does not mean anything in something chemically pure
3 days 17 hrs
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