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2.5

Pre-filtering

Process of Micron Filtration

These are pressure vessels filtered internally with pleated/PP cartridge elements of 5/20

microns rating, which removes micron - sized particles. the imported filter housing is made

for food grade NSF material and it can be opened easily for cleaning of cartridge filter.

A 5/20 - micron spun polypropylene pre-filter cartridge is used to protect the membranes and

controls from particles which may be in the inlet feedwater. The cartridge should be removed

every 4 to 6 months and replaced if plugged. Contact Hi-tech office or your Distributor for

pre-filters.

Note :

3.0

OPERATION SPECIFICATIONS

3.1.

Osmonics

Salt Rejection

Monovalent Ions:

Polyvalent Ions:

Suspended Matter Rejection:

Bacteria Rejection:

Pyrogen Rejection:

Organic Rejection:

pH Range:

Continuous Free Chlorine:

Slit Density Index:

Iron Concentration:

MV indicates Molecular Weight. (Normal cutoff point for rejection of saccharide-type

molecules larger than the stated molecular weight)

Chlorine tolerance is very pH-dependent. Increased tolerance is likely where feedwater pH is

7.0 or lower.

3.2

Feedwater Specifications

Membrane

Temperature:

Inlet Pressure:

The machine must be operated on filtered water only.

™/Filmtek™ membranes are used in RO machines.

Table 1 - Membrane Operating Parameters

Minimum 35 F (2 C)

Minimum 30 psi (2.1 bar)

Membrane

96%

98%

99+%

>150 MV

5.5-10.0

Short-term exposure to 0.2 mg/L

Continuous exposure less than 0.1 mg/L

0.2 mg/L

Maximum 85 F (29 C)

Maximum 60 psi (4.1 bar)