CLACK Calcite for pH correction

Manufacturer: CLACK

Product SKU: A8021-01

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Delivery time: 2-5 working days

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Description

Technical data

Attachments

Calcite is a naturally occurring calcium carbonate media. One of the advantages of Calcite is its self-limiting property. When properly applied, it corrects pH only enough to reach a non-corrosive equilibrium. It does not overcorrect under normal conditions.

Features

Naturally occurring material
Low uniformity coefficient for maximum contact for controlled pH correction
Slower reacting for controlled pH correction
Inexpensive

Upon contact with Calcite, acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces the potential leaching of copper, lead and other metals found in typical plumbing systems. Periodic backwashing will prevent packing, reclassify the bed and maintain high service rates. Depending on pH, water chemistry and service flow, the Calcite bed will have to be periodically replenished as the Calcite is depleted.

As the Calcite’s calcium carbonate neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.

Calcite can be effectively combined with Clack Corosex to combine the high flow neutralization properties of Corosex, along with the slower reacting low flow properties of Calcite, increasing the ability to correct low pH.
Made in USA.

Physical Properties

Parameter	Value
Bulk Density	1,440 kg/m³
Effective Size	0.4 mm
Uniformity Coefficient	1.5
Mesh Size	16 × 40
Specific Gravity	2.7
Hardness	3.0 (Mohs scale)
Color	Near white

Conditions for Operation

Parameter	Value
Water pH range	5.0–7.0
Bed	Gravel support bed is recommended
Bed depth	24–30 in. (approximately 61–76 cm)
Freeboard	50% of bed depth (min.)
Service flow rate	7.3–14.6 m³/h per m²
Backwash flow rate	19.5–29.3 m³/h per m²
Backwash bed expansion	12% minimum