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Blog: Imperial Systems Approach to Dust Collection

The Filter Efficiency Alternatives to Donaldson Torit Cartridge Filters

Donaldson Torit cartridge filters – Are you familiar with filter efficiency measures?

Looking for Donaldson Torit cartridge filters?

Imperial Systems is here to offer you our tips on how to pick out your cartridge filters as well as test your dust. For metalworking professionals, a variety of options can mean a lot of time spent investigating them. We’d like to give you a starting-point refresher so that you can optimize value on dust collection and select the best cartridge filter for your needs.  donaldson torit cartridge filters

  1. Consider the different measures of filter efficiency.

There are two primary methods used by manufacturers in dust collection which express filter efficiency. First, there’s gravimetric analysis, which is determined by the weight of particles. The filter efficiency might be expressed as “91.555% on particles of .45 or larger by weight.” The other measure is minimum efficiency reporting value (MERV). This runs on a scale from 1 to 16, with MERV 16 being the highest efficiency you will find.

These measures are useful as you compare filters, but don’t rely only on them to calculate efficiency. Be sure to check that you are satisfying the OSHA and EPA requirements for dust collection performance. OSHA should be followed if you discharge air to re-circulate inside, while EPA should constitute your guideline if discharge outside.

  1. Mass density efficiency is the best predictor of OSHA compliance

Mass density efficiency is calculated as the weight per unit volume of air: for example, OSHA might say that your emission cannot surpass 5mg/cu m at the dust collector discharge. In the same way, EPA will be most concerned that your emissions remain below the threshold limit (defined as grains per cu ft or mg/cu m.), not the percentages you get from the above-stated measurements. The best way to ensure that your efficiency measure will satisfy the above standards, you can ask your supplier to give you a written guarantee that filters you select will be compliant with these regulations.

  1. Testing your dust

Dust collection and testing is an oft-used practice that manufacturers use in order to make decisions that will be environmentally healthy. The two types of dust testing usually utilized in this process are bench testing and explosibility testing. Bench testing is used to determine the dust’s physical properties, while explosibility tells you the combustibility of the dust.

  • Bench testing involves a number of tests that will help you choose your filter cartridge. The particle size analysis expresses the dust’s particle size in the submicron level so that you can choose a filtration efficiency appropriate to it. It also gives a count of the particles of that size, and the volume of the dust.
  • Explosibility testing is used to determine the prevention equipment needed on your dust collector. This requires multiple steps including having a laboratory analyze a dust sample. This can also be helpful when you are picking a filter since they come in different types.

Donaldson Torit cartridge filters are one option you may be considering, and at Imperial Systems we are glad to help you figure out exactly what you need. We offer a variety of dust collection materials at top industry standard. Like, Donaldson Torit cartridge filters we offer cartridge filters and other manufacturing tools for companies across the US. We’re proud to provide you with customer service that will bring you to exactly where you need to be. Imperial Systems: Call 800-918-3013 today for a free consultation.