corkman Posted January 15, 2012 Share Posted January 15, 2012 Hi All, Could someone please tell me where I can buy this stuff in Bangkok? Many thanks in advance. Link to comment Share on other sites More sharing options...
monty1412 Posted January 15, 2012 Share Posted January 15, 2012 Muriatic acid is just hydrocholoric acid so any homepro or like should have it. Just premix with water before you add to pool and remember add acid to water when premixing not water to acid ( dissolution is highly exothermic and if you add water to the acid it can explode back out all over you. Gloves and eyewaer and you are in control cheers Link to comment Share on other sites More sharing options...
corkman Posted January 15, 2012 Author Share Posted January 15, 2012 Muriatic acid is just hydrocholoric acid so any homepro or like should have it. Just premix with water before you add to pool and remember add acid to water when premixing not water to acid ( dissolution is highly exothermic and if you add water to the acid it can explode back out all over you. Gloves and eyewaer and you are in control cheers Thanks Monty. Any idea approxiamtely how much this stuff costs? I'm a little bit ignorant, but I've read Muriatic Acid is about 35% the strength of hydrocholoric acid - so I should use about 1/3rd of the mix? Cheers. Link to comment Share on other sites More sharing options...
sezze Posted January 15, 2012 Share Posted January 15, 2012 Muriatic acid is just hydrocholoric acid so any homepro or like should have it. Just premix with water before you add to pool and remember add acid to water when premixing not water to acid ( dissolution is highly exothermic and if you add water to the acid it can explode back out all over you. Gloves and eyewaer and you are in control cheers Thanks Monty. Any idea approxiamtely how much this stuff costs? I'm a little bit ignorant, but I've read Muriatic Acid is about 35% the strength of hydrocholoric acid - so I should use about 1/3rd of the mix? Cheers. I do not have info over the price . Muriatic acid and hydrochloric acid are the same . It is just a different name . 35% is near the highest reachable as it is a gas in water solution . Smoking HCL is 37% if i remember correct , and you will see fumes of white smoke going out of the bottle . 35% is just below that , so it is very concentrated stuff . Link to comment Share on other sites More sharing options...
stevehaigh Posted January 21, 2012 Share Posted January 21, 2012 (edited) about 150b/gallon available in most building shops in thai its กรดเกลือgroht gleuua gleuua as in salt. it quite hard to say, the 'uua', its like the sound you make when you step in dog s&*t Edited January 21, 2012 by stevehaigh Link to comment Share on other sites More sharing options...
Baht Man Posted February 21, 2021 Share Posted February 21, 2021 I've not been able to find it at ANY shop here in Udon Link to comment Share on other sites More sharing options...
Bagwain Posted February 22, 2021 Share Posted February 22, 2021 17 hours ago, Baht Man said: I've not been able to find it at ANY shop here in Udon Any swimming pool shop should have it in 20 litre drums! Link to comment Share on other sites More sharing options...
SantiSuk Posted March 21, 2021 Share Posted March 21, 2021 Global House used to have it in 20kg carboys in the two branches within driving distance of me (Ubon Ratchathani and Kantharalak) at about 280 baht, but they both seem not to have restocked in recent months. Haven't yet asked if that is intentional or just a short term supply issue. Prior to Global House, when the largest of the watsadus (DIY sheds) in Ubon had stopped stocking it 8 years ago I could not find carboys elsewhere in the other national chain watsadus or builders merchants locally 'for love nor money'* - despite those pool guys in Bangkok and Pattaya on pool threads annoyingly saying it's available at all builders merchants! My guess is that many retailers find handling such a dangerous chemical a pain in the proverbial! I found myself back then 6-8 years ago having to collect it in bulk (ie 5 or more carboys at a time) from a builders merchant in Roi Et (a friend living there had alerted me to it) or Buriram (well-known watsadu just north of the ring road). Then Global opened locally. Now I'm back to square one and will have to troll round the local watsadus again when I get nearer to running out. *Some had smaller bottles but not at a very economic price. I'm recalling3 litres for 100baht kind of price) Link to comment Share on other sites More sharing options...
SantiSuk Posted March 21, 2021 Share Posted March 21, 2021 Just now, SantiSuk said: Global House used to have it in 20kg carboys in the two branches within driving distance of me (Ubon Ratchathani and Kantharalak) at about 280 baht, but they both seem not to have restocked in recent months. Haven't yet asked if that is intentional or just a short term supply issue. Prior to Global House, when the largest of the watsadus (DIY sheds) in Ubon had stopped stocking it 8 years ago, I could not find carboys elsewhere in the other national chain watsadus or builders merchants locally 'for love nor money'* - despite those pool guys in Bangkok and Pattaya on pool threads annoyingly saying it's available at all builders merchants! My guess is that many retailers find handling such a potentially dangerous chemical (you have to be carefull of spillage from insecure caps when transporting yourself) a pain in the proverbial! I found myself back then 6-8 years ago having to collect it in bulk (ie 5 or more carboys at a time) from a builders merchant in Roi Et - a friend living there had alerted me to it - or Buriram (well-known watsadu just north of the ring road). Then Global opened locally. Now I'm back to square one and will have to troll round the local watsadus again when I get nearer to running out. *Some had smaller bottles but not at a very economic price. I'm recalling 3 litres for 80 baht kind of price) Link to comment Share on other sites More sharing options...
SwimmingPoolsThailand Posted April 6, 2021 Share Posted April 6, 2021 To dispel some of the conjecture: Muriatic (American English) and Hydrochloric Acid are exactly the same product. It is used in pools for reducing the pH but it is a very common chemical - it's what your stomach produces to digest your food. Due to the bed rock type in most of Thailand (usually sedimentary rock - limestone), most pools regularly need pHminus or hydrochloric acid to keep the pH down to 7.2 to 7.6. Ask for กรดไฮโดรคลอริก (pronounced as in English ' hydrochloric acid'), or its more common name here กรดเกลือ, pronounced 'grot gloowa', literally 'salt acid' - Salzsaüre as it is known in German. Hydrochloric Acid is widely available at many Mom & Pop hardware stores and in all Home Supplies Centres such as Do Home, Home Hub, Thai Watsadu, and Global House. It is sold in 20 Litre PVC canisters and costs around ฿270. In pools, because it gives off dangerous fumes and is difficult to store, Hydrochloric Acid is only generally used together with automatic pH monitoring and dosing systems. Much safer and easier to use (and goes a lot further for the price) in other pools is pHminus (sodium bisulphate), sometimes marketed as 'pH Down', a 'dry' acid available from all pool stores and online but at wildly different prices - some plainly extortionate. Shop around. Link to comment Share on other sites More sharing options...
Bagwain Posted April 6, 2021 Share Posted April 6, 2021 Acid is only generally used together with automatic pH monitoring and dosing systems. 555555555555 not here. Expensive rubbish are the dosing machines~ Link to comment Share on other sites More sharing options...
Saanim Posted May 24, 2021 Share Posted May 24, 2021 Muriatic acid = hydrochloric acid = HCl, that's the best to ask for in any chemical shop: "Acid HCL" or Salt Acid. (It's used in classic station batteries Ni-Cd - not the lead batteries for cars.) Why not to google for Chemical shop in Bangkok or wherever? It's used for lowering pH, in the same way as pH Minus, just much cheaper. Precaution: always pour into the water bucket, not opposite. It's also good when cleaning the dirty rand around the water line once in few weeks/months, it goes very easily: dissolved ca. 1 part into 3- 4 of water in a bucket, or test it first, it depends on the concentration. Then with scotch foam on a handle to clean around the pool. Precaution: good glasses. I do it being inside the pool tiptoe, the bucket floating on water next to me, carefully proceeding around. If cleaning a pool of plastic foil, better first to test it whether the plastic material will not be affected. Similar function of lowering pH can be made by sulphuric acid, H2SO4, same as it's used in car lead batteries. Link to comment Share on other sites More sharing options...
Bagwain Posted May 24, 2021 Share Posted May 24, 2021 (edited) 3 hours ago, Saanim said: Muriatic acid = hydrochloric acid = HCl, that's the best to ask for in any chemical shop: "Acid HCL" or Salt Acid. (It's used in classic station batteries Ni-Cd - not the lead batteries for cars.) Why not to google for Chemical shop in Bangkok or wherever? It's used for lowering pH, in the same way as pH Minus, just much cheaper. Precaution: always pour into the water bucket, not opposite. It's also good when cleaning the dirty rand around the water line once in few weeks/months, it goes very easily: dissolved ca. 1 part into 3- 4 of water in a bucket, or test it first, it depends on the concentration. Then with scotch foam on a handle to clean around the pool. Precaution: good glasses. I do it being inside the pool tiptoe, the bucket floating on water next to me, carefully proceeding around. If cleaning a pool of plastic foil, better first to test it whether the plastic material will not be affected. Similar function of lowering pH can be made by sulphuric acid, H2SO4, same as it's used in car lead batteries. Sulphuric acid is far more dangerous than hydrochloric acid and is not recommended for swimming pools! Cleaning the pools scum lines with a quality pool detergent is far easier than using acid. Most scum lines are oil based and acid doesn't work on oils! Edited May 24, 2021 by Bagwain Link to comment Share on other sites More sharing options...
Saanim Posted May 26, 2021 Share Posted May 26, 2021 On 5/24/2021 at 7:48 PM, Bagwain said: Sulphuric acid is far more dangerous than hydrochloric acid and is not recommended for swimming pools! Cleaning the pools scum lines with a quality pool detergent is far easier than using acid. Most scum lines are oil based and acid doesn't work on oils! Both kinds of the acid are dangerous once they are not used properly. I do not know how much more easier another detergent could be than the HCL solution I am using when it immediately goes away with the first touch. However, I do not have an oily water, that's perhaps a problem of hotel pools where the guests are overcreamed. Nevertheless, even such dirty line will not be a pure oil substance, the mixture with other sludge from the water will enable to be removed by the acid. Link to comment Share on other sites More sharing options...
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