Refractometers - Page 4

rbursek · 05-08-2008, 11:40 AM

Trying it again Jack, can not do it wrong file type.

Boomer · 05-08-2008, 11:46 AM

This guys is what Bob and JAK are referring to.

Refractometer; New ref.std.

Refractometers and Salinity Measurement by Randy Holmes-Farley - Reefkeeping.com

The biggest issue with some of the Chinese refracts is that right out of the box and calibrated with RO/DI vs a known NSW std, such as PinPoint 53 mS, can be off as much as 0-4 ppt. I might add, there is no such thing as a hand-held refract for seawater, despite any ads you may see anywhere. They are all for a NaCl or table salt solution.

AQTCJAK · 05-08-2008, 11:48 AM

Here is a manufactures pdf telling how to calibrate them

http://www.extech.com/instrument/pro...ls/RF20_UM.pdf

rbursek · 05-08-2008, 11:51 AM

This the second time you have come to my rescue Boomer!
Thanks

Boomer · 05-08-2008, 12:09 PM

Bob to move those artivles off of RC or anywhere to here, just right click on the article url and choose "copy address link". The reason you are not getting it here is software formatting shortens up the long link at times. This can be seen on RC or here where in the link you see a bunch of ...... If the .... are not there then you can just copy the link the normal way and paste it. Here is one of those ... links

http://archive.reefcentral.com/foru...threadid=102605

see the ... after the foru ? This is why the link does not work

Here is one with no .. and it works with just a smiple copy paste

What is Seawater? by Randy Holmes-Farley - Reefkeeping.com

I might add to this there are some refrect that do not have these big erors in them but they are like ~ $100. The ones JAK is getting for you guys are fine and what most use but all need to be checked.

JAK

I dont' know where you got them from but if not dirrect form the manufacture then try here next time, if you do another group buy, as these are the guys

I do not know how many one would have to buy.

Huake Instrument Co.,Ltd
Hand Held refractometer,PH Tester,DDS Tester,EC meter,Soil Tester,Digital Thermomete,Huake,Hong Han,china,shenzhen

AQTCJAK · 05-08-2008, 12:15 PM

I do buy direct from the manufacture & they are tested. I have put these up against 100-200 Dollar units & they test identicle

rbursek · 05-08-2008, 12:17 PM

Thanks again Boomer.

Boomer · 05-08-2008, 12:42 PM

OK JAK good but many from this company have been off -0-4 ppt when calibrated in RO/DI. Any hand-held refract should read 1.5 ppt to low when calibrated with RO/DI to a 35 ppt seawater salt mix. (3.5 or 1.0264). Meaning, if it reads 35 ppt with a RO/DI cal it will really be a 33.5 ppt seawater salt mix salinity and not the 35 ppt which the meter is reading. So, if all your meters are tested and good then one could tell the user to use just RO/DI and just have the refract read 36.5 which = 35 ppt NSW. Some of these meters are right on to NSW right out of the box when cal to NSW. This due to their poor quality control and poor optical properties. But, as long as we can correct them or they have been tested, such as yours, so one know where they are at, then they are fine to use. However, any hand-held refract is only good for a narrow range of NSW salinity. But all are fine within the range we use. It may have been that Huake just had a "bad batch" out. Hopefully it has been fixed.

AQTCJAK · 05-08-2008, 02:03 PM

I dont buy from him. I have never had any issues I have test with NSW as well & all is good

Boomer · 05-08-2008, 02:19 PM

Well, then I do not understand what you mean by "I buy direct form the manufacture" as those you posted

RHS-10ATC - Screw Claibrated $31.00 11 avail
RHSN-10ATC - Screwless Claibration $33.00 10 avail

are made by Huake Instrument Co.,Ltd. Just thinking you can get a better deal from them. Unless somebody else is using their modle numbers.

RHB-10ATC* Hand refractometer.

AQTCJAK · 05-08-2008, 06:06 PM

DOnt believe everything you read that is not a fact

Boomer · 05-08-2008, 07:10 PM

Oh, I'm pretty sure it is FACT. I don't see you posting anything that otherwise states that is not fact. You are just a another company SELLING something and who often avoid the real facts. Now that I see you are actually a aquarium company and not just a hobbyist, like I thought, I can see that. You just dont' want people here to know where they come from. I'd be more than gald for you to show me otherwise. It is not the first time I have posted where these refracts come from and I doubt it will be the last on any forum.

naperenterprise · 05-08-2008, 08:07 PM

Jack is selling a product at a very good price compared to many other aquatic business out there. His price is even better that DFS, and that is pretty impressive.

I apreciate all the information on this particular thread, but please don't attack Jack. I personally enjoy the deals he offers the folks of RS.

He didn't design the thing, this is something he has had success with and decided to offer it within his product line.

(Thank you Jack)

AQTCJAK · 05-08-2008, 08:38 PM

Anytime Jason

Boomer · 05-08-2008, 08:57 PM

Jason, I agree with you and think JAK's prices are more than fare. IMHO his group buy was a good thing for those that got envolved. At least I can say this is something rarely seen by others companies.

05-08-2008, 11:40 AM	#46 (permalink)
rbursek Sea Pen Join Date: Mar 2008 Location: Milw, WI area suburb Posts: 347 View Gallery Karma Komment Add yours!	Re: Refractometers Trying it again Jack, can not do it wrong file type. __________________ The difference between a Reef tank and a money shreader is the Tank will trip the GFI! Bret Farve turned #4 into #1!!!!! 120gal tank, 30gal fuge/sump, 2 250w MH, 2 96w Actinics, SPS's, LPS's, fish. Bob

05-08-2008, 11:46 AM	#47 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,020 View Gallery Karma Komment	Re: Refractometers This guys is what Bob and JAK are referring to. Refractometer; New ref.std. Refractometers and Salinity Measurement by Randy Holmes-Farley - Reefkeeping.com The biggest issue with some of the Chinese refracts is that right out of the box and calibrated with RO/DI vs a known NSW std, such as PinPoint 53 mS, can be off as much as 0-4 ppt. I might add, there is no such thing as a hand-held refract for seawater, despite any ads you may see anywhere. They are all for a NaCl or table salt solution. __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.

05-08-2008, 11:48 AM	#48 (permalink)
AQTCJAK Tiger Shark Join Date: Aug 2007 Posts: 6,844 View Gallery Karma Komment Add yours!	Re: Refractometers Here is a manufactures pdf telling how to calibrate them http://www.extech.com/instrument/pro...ls/RF20_UM.pdf __________________ A Wiseman once said build a stage add a pole & they will dance - Jack 2007 www.aquaticaggression.com Projects & Chronicels http://www.reefsanctuary.com/forums/...car-buffs.html http://www.reefsanctuary.com/forums/...nts-tanks.html

05-08-2008, 11:51 AM	#49 (permalink)
rbursek Sea Pen Join Date: Mar 2008 Location: Milw, WI area suburb Posts: 347 View Gallery Karma Komment Add yours!	Re: Refractometers This the second time you have come to my rescue Boomer! Thanks __________________ The difference between a Reef tank and a money shreader is the Tank will trip the GFI! Bret Farve turned #4 into #1!!!!! 120gal tank, 30gal fuge/sump, 2 250w MH, 2 96w Actinics, SPS's, LPS's, fish. Bob

05-08-2008, 12:09 PM	#50 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,020 View Gallery Karma Komment	Re: Refractometers Bob to move those artivles off of RC or anywhere to here, just right click on the article url and choose "copy address link". The reason you are not getting it here is software formatting shortens up the long link at times. This can be seen on RC or here where in the link you see a bunch of ...... If the .... are not there then you can just copy the link the normal way and paste it. Here is one of those ... links http://archive.reefcentral.com/foru...threadid=102605 see the ... after the foru ? This is why the link does not work Here is one with no .. and it works with just a smiple copy paste What is Seawater? by Randy Holmes-Farley - Reefkeeping.com I might add to this there are some refrect that do not have these big erors in them but they are like ~ $100. The ones JAK is getting for you guys are fine and what most use but all need to be checked. JAK I dont' know where you got them from but if not dirrect form the manufacture then try here next time, if you do another group buy, as these are the guys I do not know how many one would have to buy. Huake Instrument Co.,Ltd Hand Held refractometer,PH Tester,DDS Tester,EC meter,Soil Tester,Digital Thermomete,Huake,Hong Han,china,shenzhen __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.

05-08-2008, 12:15 PM	#51 (permalink)
AQTCJAK Tiger Shark Join Date: Aug 2007 Posts: 6,844 View Gallery Karma Komment Add yours!	Re: Refractometers I do buy direct from the manufacture & they are tested. I have put these up against 100-200 Dollar units & they test identicle __________________ A Wiseman once said build a stage add a pole & they will dance - Jack 2007 www.aquaticaggression.com Projects & Chronicels http://www.reefsanctuary.com/forums/...car-buffs.html http://www.reefsanctuary.com/forums/...nts-tanks.html

05-08-2008, 12:17 PM	#52 (permalink)
rbursek Sea Pen Join Date: Mar 2008 Location: Milw, WI area suburb Posts: 347 View Gallery Karma Komment Add yours!	Re: Refractometers Thanks again Boomer. __________________ The difference between a Reef tank and a money shreader is the Tank will trip the GFI! Bret Farve turned #4 into #1!!!!! 120gal tank, 30gal fuge/sump, 2 250w MH, 2 96w Actinics, SPS's, LPS's, fish. Bob

05-08-2008, 12:42 PM	#53 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,020 View Gallery Karma Komment	Re: Refractometers OK JAK good but many from this company have been off -0-4 ppt when calibrated in RO/DI. Any hand-held refract should read 1.5 ppt to low when calibrated with RO/DI to a 35 ppt seawater salt mix. (3.5 or 1.0264). Meaning, if it reads 35 ppt with a RO/DI cal it will really be a 33.5 ppt seawater salt mix salinity and not the 35 ppt which the meter is reading. So, if all your meters are tested and good then one could tell the user to use just RO/DI and just have the refract read 36.5 which = 35 ppt NSW. Some of these meters are right on to NSW right out of the box when cal to NSW. This due to their poor quality control and poor optical properties. But, as long as we can correct them or they have been tested, such as yours, so one know where they are at, then they are fine to use. However, any hand-held refract is only good for a narrow range of NSW salinity. But all are fine within the range we use. It may have been that Huake just had a "bad batch" out. Hopefully it has been fixed. __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.

05-08-2008, 02:03 PM	#54 (permalink)
AQTCJAK Tiger Shark Join Date: Aug 2007 Posts: 6,844 View Gallery Karma Komment Add yours!	Re: Refractometers I dont buy from him. I have never had any issues I have test with NSW as well & all is good __________________ A Wiseman once said build a stage add a pole & they will dance - Jack 2007 www.aquaticaggression.com Projects & Chronicels http://www.reefsanctuary.com/forums/...car-buffs.html http://www.reefsanctuary.com/forums/...nts-tanks.html

05-08-2008, 02:19 PM	#55 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,020 View Gallery Karma Komment	Re: Refractometers Well, then I do not understand what you mean by "I buy direct form the manufacture" as those you posted RHS-10ATC - Screw Claibrated $31.00 11 avail RHSN-10ATC - Screwless Claibration $33.00 10 avail are made by Huake Instrument Co.,Ltd. Just thinking you can get a better deal from them. Unless somebody else is using their modle numbers. RHB-10ATC* Hand refractometer. __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.

05-08-2008, 06:06 PM	#56 (permalink)
AQTCJAK Tiger Shark Join Date: Aug 2007 Posts: 6,844 View Gallery Karma Komment Add yours!	Re: Refractometers DOnt believe everything you read that is not a fact __________________ A Wiseman once said build a stage add a pole & they will dance - Jack 2007 www.aquaticaggression.com Projects & Chronicels http://www.reefsanctuary.com/forums/...car-buffs.html http://www.reefsanctuary.com/forums/...nts-tanks.html

05-08-2008, 07:10 PM	#57 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,020 View Gallery Karma Komment	Re: Refractometers Oh, I'm pretty sure it is FACT. I don't see you posting anything that otherwise states that is not fact. You are just a another company SELLING something and who often avoid the real facts. Now that I see you are actually a aquarium company and not just a hobbyist, like I thought, I can see that. You just dont' want people here to know where they come from. I'd be more than gald for you to show me otherwise. It is not the first time I have posted where these refracts come from and I doubt it will be the last on any forum. __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.

05-08-2008, 08:07 PM	#58 (permalink)
naperenterprise Plate Coral Join Date: Jan 2008 Location: Near Pittsburgh, PA Posts: 795 View Gallery Karma Komment Add yours!	Re: Refractometers Jack is selling a product at a very good price compared to many other aquatic business out there. His price is even better that DFS, and that is pretty impressive. I apreciate all the information on this particular thread, but please don't attack Jack. I personally enjoy the deals he offers the folks of RS. He didn't design the thing, this is something he has had success with and decided to offer it within his product line. (Thank you Jack) __________________ ~~~Jason~~~ Go check out My Chronicle

05-08-2008, 08:38 PM	#59 (permalink)
AQTCJAK Tiger Shark Join Date: Aug 2007 Posts: 6,844 View Gallery Karma Komment Add yours!	Re: Refractometers Anytime Jason __________________ A Wiseman once said build a stage add a pole & they will dance - Jack 2007 www.aquaticaggression.com Projects & Chronicels http://www.reefsanctuary.com/forums/...car-buffs.html http://www.reefsanctuary.com/forums/...nts-tanks.html

05-08-2008, 08:57 PM	#60 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,020 View Gallery Karma Komment	Re: Refractometers Jason, I agree with you and think JAK's prices are more than fare. IMHO his group buy was a good thing for those that got envolved. At least I can say this is something rarely seen by others companies. __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.

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