--- title: 4 Easy Steps to Calculate the Right Amount of Purging for Your Machine description: Dial in your purge process and reduce waste by learning how to test, weigh, and measure purging compound accurately in four simple, effective steps. image: https://www.asaclean.com/hubfs/assets/images/images/purging-101-pillar/purging-concentrates-880x530.jpg --- [ Order Online ](https://asaclean.my.site.com/b2bstore) [ Free Sample ](https://offers.asaclean.com/free-sample) ## [ Asaclean Blog ](https://www.asaclean.com/blog) Browse by Topic " aerospace asaclean asaclean news Asaclean® benefits asahi kasei automotive Best Practices black specks blisters blow molding blown-film extrusion buyers caps and closures carbon contamination cast-film extrusion Chemical Purging Compounds clear applications Color Changeovers Company News compounding consumer products contamination Cost savings custom molders Customer Success Story decreasing scrap defects electronics Energy Efficiency EX Grade extruder cleaning Extrusion fillament glass filled Glitter Grade Selection HDPE High and Low Temp Changeovers hold a bubble Hot Runners Injection Molding Injection Molding Tips LDPE Lightweight automotive components LLDPE low residue maintenance Material Changeovers Mechanical Purging Compounds medical Melt Flow Index NPE 24 nylons on the fly packaging PCR PEEK Polypropylene Post Consumer Resins preventative preventative purging processing tips profile extrusion Purge Program purge programs Purge Training Purge Trial purging purging compounds purging concentrates purging procedures Purging Tips quality recycled resins residue issues scrap reduction Screw Pulls sheet extrusion shutdown and sealing start-up super engineering resins Sustainability Tech Day technical support training trials Troubleshooting Twin Screw twin screw extrusion two step purging U Grade ULTEM venting Viscosity webinars wire extrusion - 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Do you know how to perform an initial test and measure the purging compound accurately? You must read this blog if you answered yes to any of these questions. I will show you how to define the amount of purging compound you need for each case and machine and how to avoid common mistakes affecting your results. Let’s get started. Here are some steps to follow to calculate the right amount of purging compound for your machine: **Step 1:** Consult with the manufacturer of the purging compound and follow their recommended [purging procedure](https://www.asaclean.com/resources/purging-instructions). This is crucial to ensure you use the purging compound correctly and effectively. Different purging compounds may have other procedures, such as temperature settings, injection speed, back pressure, etc. You need to follow the procedure that matches your purging compound. **Step 2:** Perform an initial test on your machine using the recommended [purging procedure](https://www.asaclean.com/resources/purging-instructions). This is where you check the cleaning performance of the purging compound and how much material comes out of the machine. You need to monitor the test carefully and observe when the material changes from the resin to the purging compound. You can assign someone else to watch for this while you control the machine. **Step 3:** Separate the resin pile from the purging compound pile and weigh only the purging compound from the machine. This is the amount of purging compound you need to use for your machine the next time you purge. Do not include the amount of resin or purging compound in the machine. You can also record the purging time and the scrap percentage for future reference. **Step 4:** Repeat the test if necessary to confirm the results. You can also compare the results with other methods or purging compounds to see which gives you the lowest Cost Per Purge. The Cost Per Purge is calculated by adding the cost of the purging compound, the resin cost, and the downtime cost. You want to choose the method or purging compound that gives you the best cleaning performance with the least amount of material, time, and scrap. The procedure and ways of measuring and weighing the materials are critical in optimizing the consumption of purging compounds after the initial test. The initial test should define the performance of the purging process and its [cost-benefit ](https://www.asaclean.com/cost-savings-calculator)compared to another method. So, in comparing methods, you need to consider the percentage of scrap, the purging time, and the amount of purging compound to be fed to the machine the next time. For more information on purging processes or how you can benefit from using purging compounds to improve the efficiency of your thermoplastic process, [contact us](https://www.asaclean.com/contact-us). We would like to know about your operation and be able to give you a customized proposal.      ![Lenny Gutierrez](https://www.asaclean.com/hs-fs/hubfs/Head_Shots/Lenny%20Gutierrez%20LinkedIn%20Headshot%204-13-16.jpg?width=150&name=Lenny%20Gutierrez%20LinkedIn%20Headshot%204-13-16.jpg) #### [ Lenny Gutierrez ](https://www.asaclean.com/blog/author/lenny-gutierrez) Celebrating his 24th year with Asaclean - Asahi Kasei Plastics North America, Lenny Gutierrez is a renowned purging expert who played a pivotal role in the company's expansion into Mexico in 2009. Currently, he excels as a Technical Sales Representative for Ohio, Illinois, and Missouri, combining his extensive industry knowledge with a strategic approach to drive sales and client relations. Lenny is also a prominent presenter at tradeshows and conferences, representing Asaclean with his expertise and professionalism. - [Share On LinkedIn ](https://www.linkedin.com/in/lenny-g-6a7a758/) ## Related Posts [![Do not overuse purging compounds or your savings will suffer.](https://www.asaclean.com/hs-fs/hubfs/iStock-1028462780.jpg?width=450&height=250&name=iStock-1028462780.jpg) CAUTION: The Not So Hidden Cost of Purge Compounds – Wasteful Usage Purging Tips / 2 min read / December 02, 2025 ](https://www.asaclean.com/blog/caution-the-not-so-hidden-cost-of-purge-compounds-wasteful-usage) [![Are Purging Compounds Expensive?](https://www.asaclean.com/hs-fs/hubfs/Cost%20Savings%20Per%20Purge.jpg?width=450&height=250&name=Cost%20Savings%20Per%20Purge.jpg) Are Purging Compounds Expensive? Best Practices / 3 min read / October 29, 2024 ](https://www.asaclean.com/blog/are-purging-compounds-expensive) ## Comments Get Started ## Ready to start improving your efficiency and increasing your profitability? - [Request a Consultation](https://www.asaclean.com/blog/4-easy-steps-to-calculate-the-right-amount-of-purging-for-your-machine#) - [Contact Sales](https://www.asaclean.com/blog/4-easy-steps-to-calculate-the-right-amount-of-purging-for-your-machine#) ![](https://www.asaclean.com/hubfs/assets/images/icons/icon-layers.svg) #### Free Sample Request a free sample of Asaclean® Purging Compounds for your plant and start saving today. [Request your free sample](https://offers.asaclean.com/en/free-sample?hsLang=en) ![](https://www.asaclean.com/hubfs/assets/images/icons/icon-calculator.svg) #### Cost Savings Calculator Use our free calculator to see how much you could be saving with Asaclean® Purging Compounds. [See your savings](https://www.asaclean.com/cost-savings-calculator) [ Back to Top ](https://www.asaclean.com/blog/4-easy-steps-to-calculate-the-right-amount-of-purging-for-your-machine#top) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Lenny Gutierrez", "url" : "https://www.asaclean.com/blog/author/lenny-gutierrez" }, "dateModified" : "2025-05-06T14:45:20.975Z", "datePublished" : "2023-11-21T14:45:00.000Z", "headline" : "4 Easy Steps to Calculate the Right Amount of Purging for Your Machine", "image" : [ "https://www.asaclean.com/hubfs/assets/images/images/purging-101-pillar/purging-concentrates-880x530.jpg" ], "mainEntityOfPage" : { "@id" : "https://www.asaclean.com/blog/4-easy-steps-to-calculate-the-right-amount-of-purging-for-your-machine", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://www.asaclean.com/hubfs/Asaclean%20Logo%20TM.jpg" }, "name" : "Asahi Kasei Plastics North America" } } ``` ```json { "@context" : "http://schema.org", "@type" : "Article", "articleBody" : "Do you want to optimize your purging program by using the right amount of purging compound for your machine? Do you know how to perform an initial test and measure the purging compound accurately? You must read this blog if you answered yes to any of these questions. I will show you how to define the amount of purging compound you need for each case and machine and how to avoid common mistakes affecting your results. Let’s get started. Here are some steps to follow to calculate the right amount of purging compound for your machine:", "author" : { "@type" : "Person", "name" : "Lenny Gutierrez" }, "datePublished" : "November 21, 2023", "headline" : "4 Easy Steps to Calculate the Right Amount of Purging for Your Machine", "image" : "https://468726.fs1.hubspotusercontent-na1.net/hubfs/468726/assets/images/images/purging-101-pillar/purging-concentrates-880x530.jpg", "name" : "4 Easy Steps to Calculate the Right Amount of Purging for Your Machine", "url" : "https://www.asaclean.com/blog/4-easy-steps-to-calculate-the-right-amount-of-purging-for-your-machine" } ```