Skip to Content

Custom Inorganic Standards

  1. Products
  2. Wet Chemistry

Wet Chemistry


Wet Chemistry

CPI International offers a wide variety of Wet Chemistry Supplies to save laboratories time and money. Our COD vials, SPE disks and filters, GGA Standards for BOD5, and TSS filters are prepared and ready to use right out of the box to help labs dedicate more time to analysis and less time to tedious processes associated with sample preparation.

Wet Chemistry Testing Standards and Supplies to Lower Your Cost-Per-Test

For inquiries and assistance, you can reach us at 1 800-878-7654 (Customer Service Line), 707-525-5788 (California) or email [email protected].


Lower Your
Cost Per Sample

Manage Your Cost
Per Bench Space

Equip New
Benches Frugally

Industry Leading COD
Vial Shelf Life
2026 Variant Price List
Sort By: Featured

Wet Chemistry

[4401-06179-500] Phosphate Buffer, pH 7.2, APHA for BOD, 500 mL
Phosphate Buffer, pH 7.2, APHA for BOD, 500 mL
$ 23.00 23.0 USD
[4401-06179-1L] Phosphate Buffer, pH 7.2, APHA for BOD, 1L
Phosphate Buffer, pH 7.2, APHA for BOD, 1L
$ 50.00 50.0 USD
[4401-06179-4L] Phosphate Buffer, pH 7.2, APHA for BOD, 4L
Phosphate Buffer, pH 7.2, APHA for BOD, 4L
Item number 4401-06179-4L
$ 116.00 116.0 USD
[4385-051021] Weigh Better ™A/E Filter 21mm 100/pk
Weigh Better ™A/E Filter 21mm 100/pk
Item number 4385-051021
$ 33.60 33.6 USD
[4385-051070] Weigh Better™ A/E Filter 70mm 100/pk
Weigh Better™ A/E Filter 70mm 100/pk
Item number 4385-051070
$ 93.45 93.45 USD
[4385-051090] Weigh Better™ A/E Filter 90mm 100/pk
Weigh Better™ A/E Filter 90mm 100/pk
$ 104.00 104.0 USD
[4385-051125] Weigh Better™ A/E Filter 125mm 100/pk
Weigh Better™ A/E Filter 125mm 100/pk
Item number 4385-051125
$ 207.90 207.9 USD
[4385-051037] Weigh Better™ A/E Filter 37mm 100/pk
Weigh Better™ A/E Filter 37mm 100/pk
Item number 4385-051037
$ 50.40 50.4 USD
[4385-051110] Weigh Better™ A/E Filter 110mm 100/pk
Weigh Better™ A/E Filter 110mm 100/pk
Item number 4385-051110
$ 158.55 158.55 USD
[4385-051055] Weigh Better™ A/E Filter 55mm 100/pk
Weigh Better™ A/E Filter 55mm 100/pk
Item number 4385-051055
$ 101.00 101.0 USD
[4385-051047] Weigh Better™ A/E Filter 47mm 100/pk
Weigh Better™ A/E Filter 47mm 100/pk
$ 65.00 65.0 USD
[4385-051035] Weigh Better™ A/E Filter 35mm 100/pk
Weigh Better™ A/E Filter 35mm 100/pk
Item number 4385-051035
$ 49.35 49.35 USD
[4385-051032] Weigh Better™ A/E Filter 32mm 100/pk
Weigh Better™ A/E Filter 32mm 100/pk
Item number 4385-051032
$ 44.10 44.1 USD
[4385-051150] Weigh Better™ A/E Filter 150mm 100/pk
Weigh Better™ A/E Filter 150mm 100/pk
Item number 4385-051150
$ 261.45 261.45 USD
[4385-051105] Weigh Better™ A/E Filter 105mm 100/pk
Weigh Better™ A/E Filter 105mm 100/pk
Item number 4385-051105
$ 145.95 145.95 USD
[4385-051102] Weigh Better™ A/E Filter 102mm 100/pk
Weigh Better™ A/E Filter 102mm 100/pk
Item number 4385-051102
$ 145.95 145.95 USD
[4385-051024] Weigh Better™ A/E Filter 24mm 100/pk
Weigh Better™ A/E Filter 24mm 100/pk
Item number 4385-051024
$ 34.65 34.65 USD
[4385-051042] Weigh Better™ A/E Filter 42.5mm 100/pk
Weigh Better™ A/E Filter 42.5mm 100/pk
Item number 4385-051042
$ 59.85 59.85 USD
[4385-051030] Weigh Better™ A/E Filter 30mm 100/pk
Weigh Better™ A/E Filter 30mm 100/pk
$ 66.00 66.0 USD
[4385-051025] Weigh Better™ A/E Filter 25mm 100/pk
Weigh Better™ A/E Filter 25mm 100/pk
Item number 4385-051025
$ 35.70 35.7 USD