How we choose
What a product needs to be included
- Nominal size and the actual inside or outside diameter of each end stated for any hose, cuff, adapter or fitting
- Fitting standard stated for duct parts (hose fitting, S&D PVC, Schedule 40 or metal pipe)
- Hoses state diameter, length, wall type and cuff ends
- Separators state the bucket, drum or lid size and the inlet and outlet diameters
- Identifiable model or listing with stable specifications
What we exclude
- Fire, explosion or combustible-dust safety guarantees, including claims that grounding or any part makes a system safe (the site points to the maker's manual and NFPA guidance)
- Health, lung or dust-exposure claims for any hose, fitting or separator, and respirators or masks (medical and protective equipment, outside this segment)
- Advice to vacuum hazardous materials (asbestos, lead paint, silica from concrete, drywall in a vacuum not rated for it, flammable or hot debris) or claims that a part makes it safe
- Instructions for wiring a collector, switch, remote or blast-gate automation to mains power
- Advice to remove guards, defeat interlocks or modify a vacuum or collector motor or impeller
- Airflow, suction or CFM figures beyond what the maker publishes, or presented as tested by us
- 'Universal' or 'fits all' fit claims without the actual diameters stated
- Complete dust collectors, air cleaners and shop vacuums as recommendations (they appear only as the reference systems parts fit)
- Glues, sealants, cements and other chemicals
Claims we do not make without specific evidence
- No fire, explosion or combustible-dust safety guarantees, including claims that grounding or any part makes a system safe (the site points to the maker's manual and NFPA guidance)
- No health, lung or dust-exposure claims for any hose, fitting or separator, and respirators or masks (medical and protective equipment, outside this segment)
- No advice to vacuum hazardous materials (asbestos, lead paint, silica from concrete, drywall in a vacuum not rated for it, flammable or hot debris) or claims that a part makes it safe
- No instructions for wiring a collector, switch, remote or blast-gate automation to mains power
- No advice to remove guards, defeat interlocks or modify a vacuum or collector motor or impeller
- No airflow, suction or CFM figures beyond what the maker publishes, or presented as tested by us
- No 'Universal' or 'fits all' fit claims without the actual diameters stated
- No complete dust collectors, air cleaners and shop vacuums as recommendations (they appear only as the reference systems parts fit)
- No glues, sealants, cements and other chemicals
Evidence labels
- Tested by us
- A named person used the exact product and variant and recorded the method, dates, results and limitations.
- Research-based analysis
- We compared published information from several sources without testing the product ourselves.
- Manufacturer specification
- The figure comes from the maker's documentation and has not been independently checked.
- Seller claim
- The figure comes from a marketplace listing and has not been independently checked.
- Independent source finding
- A named third party published the finding; we attribute it rather than repeat it as our own.
Prices
Articles do not contain prices. Where a price is shown, it is the merchant's quote for the shipping destination you chose, with the time it was checked; it disappears when it is no longer current. The price at checkout can differ.
Commissions and editorial choices
We may earn a commission from qualifying purchases. Commission rates do not decide which products we recommend, and any paid placement is labeled as such.
Dates
"Editorially reviewed" dates change only when someone re-checks the article. Price checks do not change them.