If you manufacture, sell or distribute water treatment or distribution products in North America, your products typically must comply with NSF/ANSI Standard 61. NSF/ANSI 61 sets the criteria for water system components to protect health standards. It’s important that all components in water treatment meet the correct standards to ensure dangerous toxins aren’t leached.

However, there is confusion about NSF-61 certifications, and that confusion could lead to purchasing the wrong product for your application. Let’s explore NSF/ANSI 61 and how to make sure your chemical storage tank system meets the necessary requirements.

At first glance, most polyethylene storage tanks look pretty similar. It’s hard to tell the difference between a robust, well-designed tank and an inferior one. Over the years, we've found that many customers don’t know about the construction standards for polyethylene tanks, or they simply assume all tank manufacturers follow the same standards.

Unfortunately, not all polyethylene tanks are designed to meet industry standards, so it is critical to know what to look for and what you’re purchasing. The most important standard for polyethylene tanks is the ASTM D 1998. Here’s what you need to know about the ASTM standard.

How do you know by looking at a chemical storage tank how well it’s constructed? There’s a big difference between a well-designed, properly constructed tank and an inexpensive one that doesn’t meet structural requirements. But it takes more than the naked eye to spot critical flaws.

We get a lot of questions about the standard testing that is done at our facility. Vertical tanks larger than 500 gallons are extensively tested to ensure that they meet ASTM standards. Per customers’ requests, we offer additional testing on our chemical storage tank systems.

In this blog we look at how NSF/ANSI 61 certification differs by state and how that impacts tanks and drinking water components throughout the United States. 

Regardless of your geographic location, Poly Processing is committed to ensuring that our polyethylene storage tank systems are NSF/ANSI 61 certified. So no matter where you are, we can meet your state’s regulations.

In this blog we discuss the different certification tests that NSF performs for chemical storage tanks as well as potable water storage tanks.  

Poly Processing is committed to ensuring that our polyethylene chemical storage systems are NSF/ANSI 61 certified. In the first part of our series on NSF, we looked at NSF/ANSI 61 and what it meant to be certified. Some customers may be confused about whether their tanks or tank systems are certified to NSF/ANSI 61 and which certification is valid for their tank.

In this blog we discuss the basics of NSF/ANSI 61 for chemical and potable water tanks.  

Each component of a public water treatment system is subjected to meeting certain criteria. The most important standard may be NSF/ANSI 61 certification. However, there's confusion among customers as to what it is and what it covers.

Let's look at NSF/ANSI 61 and detail how to ensure chemical storage tanks meet the proper requirements.

The American Society for Testing and Materials (ASTM) has four tests in place for cross-linked polyethylene tanks. All are intended to ensure that the tank’s materials and composition meet the safety standards necessary for operational chemical storage tanks.

It’s hard to judge, with the naked eye, how a polyethylene tank is constructed. On the surface, a tank is just a tank. However, there is a big difference between a well-designed, properly constructed tank and a cheap one that doesn’t meet structural requirements.

Storing chemicals and storing water are two very different propositions. While you may save some money up front by using a water tank to store chemicals, in the long run this decision may end up costing you more than you think. There are a few critical reasons why you shouldn’t use water tanks for chemical storage.