- Details
- Specifications
- Features
Grade 40 high-purity filters from Hydocs are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.
- High-purity filters contain 0.007% maximum ash content
- Medium nominal particle retention rating of 8 µm
- Medium filtration speed (Herzberg 340 s)
- Particularly useful for gravimetric analysis
|
Catalogue No |
Size |
Qty |
|
HY040-12 |
12.7 mm |
400/pk |
|
HY040-32 |
32 mm |
100/pk |
|
HY040-42 |
42.5 mm |
100/pk |
|
HY040-47 |
47 mm |
100/pk |
|
HY040-55 |
55 mm |
100/pk |
|
HY040-70 |
70 mm |
100/pk |
|
HY040-90 |
90 mm |
100/pk |
|
HY040-110 |
110 mm |
100/pk |
|
HY040-125 |
125 mm |
100/pk |
|
HY040-150 |
150 mm |
100/pk |
|
HY040-185 |
185 mm |
100/pk |
|
HY040-240 |
240 mm |
100/pk |
|
HY040-320 |
320 mm |
100/pk |
|
HY040-450 |
450 mm |
100/pk |
|
Grade |
Grade 40 |
|
Format |
Circles |
|
Type |
Ashless |
|
Typical Particle Retention in Liquid8 |
8 µm |
|
Nominal thickness |
210 µm |
|
Typical water flow rate at 45 psi (3.1 bar) |
25 ml/min |
|
Nominal basis weight |
95 g/m² |
|
Nominal air flow rate |
21 s/100 mL/in² |
|
Nominal Ash Content |
0.007% |
|
Material |
High-quality cotton linters |
|
Alpha Cellulose Content Min. |
≥98% |
|
Typical Trace Element Levels |
Aluminium 2.5 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead <0.5 µg/g Magnesium 4 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 2.3 µg/g Silicon 6.2 µg/g Sodium 16.8 µg/g Zinc 64.5 µg/g |
|
Application |
Designed for gravimetric analysis and the preparation of samples for instrumental analysis. Gravimetric analysis for numerous components in cements, clays, iron, and steel products. As a primary filter for separating solid matter from aqueous extracts in general soil analysis. Quantitative determination of sediments in milk and as a pure analytical grade clean-up filter for solutions prior to AA spectrometry. Also used as a high-purity filter in the collection of trace elements and radionuclides from the atmosphere.
|