ORP buffer solution, also known as ORP calibration solution or ORP buffer, is the solution with which you calibrate an ORP meter or ORP probe<\/a>. It is the same fixed millivolt value, so that the ORP probe knows again where the correct measuring point lies.<\/p> Meytec has 240 mV<\/a> (at 20 \u00b0C), 250 mV<\/a>, 468 mV, 475 mV and 650 mV (the last four at 25 \u00b0C, \u00b15 mV). Every lot of 468 mV, 475 mV and 650 mV comes with a certificate of analysis. You choose 250 ml, 60 ml or 20 ml.<\/p> The exact value of the ORP calibration solution applies at the temperature stated with it: 20 \u00b0C for 240 mV, 25 \u00b0C for the other values. 240 mV and 250 mV are in the lower range. 468 mV is common in laboratory and industry. 475 mV is the point that most swimming pool controllers ask for. 650 mV is used for high oxidation. Open the manual of your own ORP meter or ORP probe controller and choose the value that matches it or is closest to it. Some devices allow their own calibration point: then take the bottle that is closest to that point.<\/p> The large bottle if you calibrate often. Pour a portion into a clean beaker, calibrate, and discard the portion. Never back into the bottle. 250 mV, 468 mV, 475 mV and 650 mV are available as 250 ml.<\/p> Small bottle. Handy for calibrating in the bottle itself, or for taking a bottle with you. 240 mV, 468 mV, 475 mV and 650 mV.<\/p> One sachet, one calibration. Always fresh buffer solution.<\/p> No. Once the ORP probe has been in it, it is contaminated. Pour a small dose into a clean beaker, calibrate, and discard the rest.<\/p> No. ORP calibration solution is for calibrating, a few minutes at most. Then rinse with clean water. Store in KCl 3 mol\/l<\/a>. Demineralised water may be used for rinsing, never for storage. ORP calibration solution is corrosive, so never leave the probe in the solution longer than necessary.<\/p> For 468 mV, 475 mV and 650 mV, yes: every lot is NIST traceable and has a CoA. For 240 mV and 250 mV there is no CoA. You will find the SDS and CoAs under Downloads.<\/p> 20 ml is one fresh portion. 250 ml or 60 ml is often more practical, especially if you calibrate often.<\/p> Yes. The ORP calibration solution is a universal buffer solution for every ORP meter and every ORP probe. Sugar Valley, Hayward, Zodiac, AstralPool, Bayrol, Hanna, Milwaukee, Mettler, WTW or Bluelab.<\/p> Close the bottle tightly after use, store it in the dark at a constant temperature, and note the opening date: after opening, the solution does not keep indefinitely. An unopened 20 ml sachet stays good until the expiry date on the sachet.<\/p> Order the ORP buffer solution that your ORP probe or ORP meter requires. Do you still have doubts or questions? Contact us<\/a>.<\/p><\/article>","link":"https:\/\/meytec.eu\/en-ie\/buffer-solutions\/orp-buffer-solution\/","name":"ORP buffer solution","slug":"orp-buffer-solution","taxonomy":"product_cat","parent":1587,"meta":[],"menu_order":0,"permalink_manager":null,"_links":{"self":[{"href":"https:\/\/meytec.eu\/en-ie\/wp-json\/wp\/v2\/product_cat\/1590","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/meytec.eu\/en-ie\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/meytec.eu\/en-ie\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/meytec.eu\/en-ie\/wp-json\/wp\/v2\/product_cat\/1587"}],"wp:post_type":[{"href":"https:\/\/meytec.eu\/en-ie\/wp-json\/wp\/v2\/product?product_cat=1590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Which mV value you need: swimming pool, laboratory or industry<\/h2>
ORP buffer solution in 250 ml, 5x60 ml or 25x20 ml<\/h2>
250 ml bottle<\/h3>
60 ml<\/h3>
20 mL<\/h3>
Frequently asked questions about ORP buffer solution<\/h2>
Can I pour used solution back into the bottle?<\/h3>
Can the ORP probe stay in the buffer solution?<\/h3>
Do I get a certificate with the ORP solution from Meytec?<\/h3>
20 ml sachet or bottle \u2013 which is better for me?<\/h3>
Does this solution work with my brand of meter or controller?<\/h3>
How long does an opened bottle stay good?<\/h3>