{"id":32162,"date":"2026-03-12T11:34:46","date_gmt":"2026-03-12T10:34:46","guid":{"rendered":"https:\/\/rls-wacon.de\/produkt\/caldur-pm-value-titrimetric\/"},"modified":"2026-03-12T11:34:46","modified_gmt":"2026-03-12T10:34:46","slug":"caldur-pm-value-titrimetric","status":"publish","type":"product","link":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-pm-value-titrimetric\/","title":{"rendered":"Caldur\u00ae PM value – Titrimetric"},"content":{"rendered":"

CALDUR\u00ae PM value test set – Titrimetric<\/h2>\n

What is the PM value measured for?<\/h3>\n

The PM value (p-value and m-value) describes the acid and base capacity of water and is a central parameter in boiler water and cooling water monitoring.<\/p>\n

The p-value (phenolphthalein value)<\/strong> indicates the base capacity up to pH 8.2 and shows the concentration of hydroxide and carbonate ions. It is particularly important for monitoring alkalinity in boiler water and cooling water systems. <\/p>\n

The m-value (methyl orange value)<\/strong> indicates the total alkalinity up to pH 4.3 and also includes the hydrogen carbonate ions. It is a measure of the total acid capacity of the water. <\/p>\n

Regular monitoring of the PM value is essential for the safe operation of steam boiler systems, cooling water systems and water treatment systems. Incorrect alkalinity values can lead to corrosion, boiler scale or foaming. <\/p>\n

How does the test set work?<\/h3>\n

The CALDUR\u00ae PM value test set works according to the proven acid-base titration method. The water sample is first mixed with a pre-reagent and an m-reagent (Reagent). The titration solution is then added drop by drop until a clear color change indicates the end point. <\/p>\n

Measuring principle:<\/strong> Each drop of titration solution corresponds to 0.5 mmol\/l (for standard sample volume) or 0.25 mmol\/l (for double sample volume). The number of drops multiplied by the drop value results directly in the PM value. <\/p>\n

Calculation:<\/strong> Number of drops \u00d7 0.5 (0.25) mmol\/l = PM value.<\/p>\n

Advantages of the CALDUR\u00ae test set<\/h3>\n
    \n
  • p-value and m-value in one test set\n

    Comprehensive alkalinity determination with one test kit<\/p>\n<\/li>\n

  • Measured value 0.5 (0.25) mmol\/l per drop\n

    Precise measurement for system monitoring<\/p>\n<\/li>\n

  • 100 provisions per set\n

    Economical for regular operational control<\/p>\n<\/li>\n

  • 3 reagents for maximum accuracy\n

    m reagent, pre-reagent and titration solution<\/p>\n<\/li>\n

  • Proven acid-base titration\n

    Reliable and reproducible results<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

    CALDUR\u00ae PM value test set – Titrimetric What is the PM value measured for? The PM value (p-value and m-value) describes the acid and base capacity of water and is a central parameter in boiler water and cooling water monitoring. The p-value (phenolphthalein value) indicates the base capacity up to pH 8.2 and shows the […]<\/p>\n","protected":false},"featured_media":32166,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[741,633,641],"product_tag":[],"class_list":{"0":"post-32162","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pm-value","7":"product_cat-testsets-caldur-en","8":"product_cat-titration-method","10":"first","11":"instock","12":"shipping-taxable","13":"purchasable","14":"product-type-variable"},"exclude_global_add_ons":[],"addons":[],"acf":[],"yoast_head":"\nCALDUR\u00ae PM value test set - Titrimetric<\/title>\n<meta name=\"description\" content=\"Precise measurement of PM value (p-value\/m-value) with CALDUR\u00ae titration test set. 0.5\/0.25 mmol\/l per drop, 100 determinations. 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