--- title: STRUB Additive CA 25 description: Art.-No. 30544 --- [Skip to content](https://kb.strub-lube.ch/en/knowledge/strub-additive-ca-25#main-content) English Show submenu for translations [Support](https://kb.strub-lube.ch/en/knowledge/kb-tickets/new?hsLang=en) ![Logo\_Swiss\_Tribology\_transp\_white\_80-1.png\]](https://kb.strub-lube.ch/hs-fs/hubfs/Logo_Swiss_Tribology_transp_white_80-1.png?height=40&name=Logo_Swiss_Tribology_transp_white_80-1.png) Open main navigation Close main navigation - English Show submenu for translations - [Support](https://kb.strub-lube.ch/en/knowledge/kb-tickets/new) - [Go to strub-lube.ch](https://strub-lube.ch/) [Go to strub-lube.ch](https://strub-lube.ch/) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Help Centre](https://kb.strub-lube.ch/en/knowledge?hsLang=en) 2. [Industry](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en) 3. [Defoamer Cooling lubricants](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#defoamer-cooling-lubricants) # STRUB Additive CA 25 ## Art.-No. 30544 **![biodegradable](https://kb.strub-lube.ch/hs-fs/hubfs/biodegradable.png?width=75&name=biodegradable.png)** **Description** STRUB Additive CA 25 is a "liquid" natural lime, biodegradable and non-hazardous. **Application** STRUB Additive CA 25 is used in water-miscible cooling emulsions where soft water can lead to foam. This is mostly the case in metalworking, CNC machines with internal cooling, where high, ultra-high pressure pumps are used. **Dosage** STRUB Additive CA 25 is added very slowly (in a very fine jet) to the well-circulating processing emulsion. During addition, the emulsion may become slightly whitish, which can be neglected and does not affect the performance of the processing emulsion. The ideal value of the total hardness in a Central European emulsion is about 20°dH. Calculation example: The starting point is 500 liters of foaming processing emulsion prepared with tap water and a total hardness of 4°dH: 15g STRUB Additive CA 25 per 100 liters of processing emulsion increase the hardness by 1°dH. 75g STRUB Additive CA 25 per 500 liters of processing emulsion increase the hardness by 1°dH. To increase the processing emulsion by 16°dH (16 x 75g) 1200g of STRUB Additive CA 25 are required.   ---   **[Download PDS](https://kb.strub-lube.ch/hubfs/Defoamer%20cooling%20lubricant_3.520/PDS_STRUB%20Additive%20CA%2025_30544_EN_1.pdf?hsLang=en)**   ---   - [Automotive](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#main-content) - [Engine oils 4-stroke](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#engine-oils-4-stroke) - [Engine oils 2-stroke](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#engine-oils-2-stroke) - [Gas engine oils](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#gas-engine-oils) - [Additive Automotive](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#additive-automotive) - [Antifreeze Automotive](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#antifreeze-automotive) - [Multi-purpose oils](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#multi-purpose-oils) - [Special products](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#special-products) - [Hydraulics Automotive](https://kb.strub-lube.ch/en/knowledge/automotive?hsLang=en#hydraulics-automotive) - [Spray & Cleaner](https://kb.strub-lube.ch/en/knowledge/spray-cleaner?hsLang=en#main-content) - [Spray](https://kb.strub-lube.ch/en/knowledge/spray-cleaner?hsLang=en#spray) - [Corrosion protection](https://kb.strub-lube.ch/en/knowledge/spray-cleaner?hsLang=en#corrosion-protection) - [Household cleaner](https://kb.strub-lube.ch/en/knowledge/spray-cleaner?hsLang=en#household-cleaner) - [Cleaner industry](https://kb.strub-lube.ch/en/knowledge/spray-cleaner?hsLang=en#cleaner-industry) - [Automotive cleaner](https://kb.strub-lube.ch/en/knowledge/spray-cleaner?hsLang=en#automotive-cleaner) - [Construction & Forestry](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#main-content) - [Formwork oils](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#formwork-oils) - [Release agent](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#release-agent) - [Mixer protection](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#mixer-protection) - [Chain lubricant](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#chain-lubricant) - [Hammer drill oils](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#hammer-drill-oils) - [Chainsaw oils](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#chainsaw-oils) - [Full gate oils](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#full-gate-oils) - [Frost protection climate](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#frost-protection-climate) - [Frost protection sprinkler](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#frost-protection-sprinkler) - [Alkylated petrol](https://kb.strub-lube.ch/en/knowledge/construction-forestry?hsLang=en#alkylated-petrol) - [Industry](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#main-content) - [Gear oils industry](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#gear-oils-industry) - [Slideway oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#slideway-oils) - [Hydraulic oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#hydraulic-oils) - [Vacuum pump oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#vacuum-pump-oils) - [Compressor oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#compressor-oils) - [Various oils industry](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#various-oils-industry) - [Turbine oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#turbine-oils) - [Cylinder oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#cylinder-oils) - [Heat transfer oils SYNT](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#heat-transfer-oils-synt) - [Spindle fluids](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#spindle-fluids) - [Greases](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#greases) - [Pastes](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#pastes) - [Special greases](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#special-greases) - [Silicone greases](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#silicone-greases) - [Actuating agents Cooling lubricants](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#actuating-agents-cooling-lubricants) - [Cooling lubricants](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#cooling-lubricants) - [Defoamer Cooling lubricants](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#defoamer-cooling-lubricants) - [Cutting oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#cutting-oils) - [Thread Cutting Oils & Pastes](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#thread-cutting-oils-pastes) - [Punching oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#punching-oils) - [Fast evaporating punching oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#fast-evaporating-punching-oils) - [Hardening oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#hardening-oils) - [Minimum Quantity Lubrication Off](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#minimum-quantity-lubrication-off) - [Drawing and forming oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#drawing-and-forming-oils) - [Grinding oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#grinding-oils) - [Lapping and honing oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#lapping-and-honing-oils) - [Erosion oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#erosion-oils) - [Silicone oils](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#silicone-oils) - [Forming pastes](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#forming-pastes) - [Die lubricant](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#die-lubricant) - [Special products](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#special-products) - [Mould release agent](https://kb.strub-lube.ch/en/knowledge/industry?hsLang=en#mould-release-agent) - [H1 FOOD](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#main-content) - [H1](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1) - [H1 Gear Oils](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-gear-oils) - [H1 Adhesive lubricants](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-adhesive-lubricants) - [H1 Chain lubricants](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-chain-lubricants) - [H1 Process fluids](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-process-fluids) - [H1 Slideway oils](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-slideway-oils) - [H 1 Specialities](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h-1-specialities) - [H1 Universal greases](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-universal-greases) - [H1 Fitting greases](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-fitting-greases) - [H1 Assembly and grinding pastes](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-assembly-and-grinding-pastes) - [H1 Sprays](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-sprays) - [H1 Antifreeze air conditioning / heating](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-antifreeze-air-conditioning-heating) - [H1 Vacuum pump oil](https://kb.strub-lube.ch/en/knowledge/h1-food?hsLang=en#h1-vacuum-pump-oil) - [VIRO-PROTECT](https://kb.strub-lube.ch/en/knowledge/viro-protect?hsLang=en#main-content) - [Skin protection care](https://kb.strub-lube.ch/en/knowledge/viro-protect?hsLang=en#skin-protection-care) - [Devices + Accessories](https://kb.strub-lube.ch/en/knowledge/devices-accessories?hsLang=en#main-content) - [Pumps](https://kb.strub-lube.ch/en/knowledge/devices-accessories?hsLang=en#pumps) - [Grease guns and grease gun fillers](https://kb.strub-lube.ch/en/knowledge/devices-accessories?hsLang=en#grease-guns-and-grease-gun-fillers) - [Lubrication equipment](https://kb.strub-lube.ch/en/knowledge/devices-accessories?hsLang=en#lubrication-equipment) - [Drum accessories and other equipment](https://kb.strub-lube.ch/en/knowledge/devices-accessories?hsLang=en#drum-accessories-and-other-equipment) - [Oil filter technology](https://kb.strub-lube.ch/en/knowledge/devices-accessories?hsLang=en#oil-filter-technology) - [Cooling lubricant tools](https://kb.strub-lube.ch/en/knowledge/devices-accessories?hsLang=en#cooling-lubricant-tools) [![Chill listening crop-3](https://kb.strub-lube.ch/hubfs/Logos/favicon.ico "Chill listening crop-3")](https://strub-lube.ch) Strub + Co. AG, Mühlemattstrasse 5, 6260 Reiden Copyright © 2026, FUCHS SWISS LUBRICANTS AG