Sterling Water Treatment CP Series Reverse Osmosis Replacement Filter Pack (ROCP-B)

Keep your reverse osmosis system producing crisp, fresh-tasting drinking water with the official Sterling Water Treatment ROCP-B CP-Series Replacement Filter Pack (MPN: ROCP-B). Specifically configured for Sterling DWSB-TFC-50 and DWSB-50-PUMP under-sink RO systems, this complete pre- and post-filter kit refreshes your multi-stage filtration setup to restore optimal water flow, eliminate unpleasant tastes and odors, and protect your RO membrane from premature fouling.

Most households replace these pre- and post-filters annually to maintain peak system performance. Note: This maintenance pack includes all staged pre- and post-filter cartridges; the RO-TFC50 membrane is sold separately.

Key Features

Complete OEM Filter Refresh

Takes the guesswork out of routine maintenance. Replaces all factory-specified pre- and post-filter stages with genuine Sterling cartridges designed specifically for your system layout.

Membrane Protection & Extended System Life

The included sediment and granular carbon pre-filters trap harsh grit, silt, rust, and chlorine before water reaches the sensitive TFC membrane, preventing chemical degradation and clogging.

Enhanced Taste, Odor & Clarity

Combines granular activated carbon, high-capacity carbon block media, and an inline polishing filter to thoroughly remove chlorine, volatile organic compounds, and foul odors from your drinking water and ice maker supply.

Straightforward Annual Servicing

Uses industry-standard 10" drop-in cartridges and a quick-connecting inline post-filter for hassle-free maintenance during your annual system sanitization and filter swap.

What’s Included in the ROCP-B Bundle

• (1) PB1005: Poly-Bonded Sediment Filter Cartridge (2.5" x 10", 5 Micron) – Captures sand, rust, scale, and particulate matter.
• (1) GAC10: Granular Activated Carbon Filter Cartridge (2.5" x 10", 10 Micron) – High-capacity coconut shell carbon for primary chlorine and organic reduction.
• (1) CB1005: Carbon Block Filter Cartridge (2.5" x 10", 5 Micron) – Fine carbon block pre-filter for secondary chemical filtration and sediment trap.
• (1) IC10 Series: Inline Carbon Post-Filter (IC10Q/IC10T) – Final polishing filter for fresh drinking water right at the faucet.

Recommended Companion Items

• RO Membrane Replacement: Sterling RO-TFC50 Universal 50 GPD RO Membrane (Typically replaced every 24 months depending on water quality).

Product Details

Explore more from this brand: Sterling Water Treatment Products

• Brand: Sterling Water Treatment
• Collection: CP Series
• MPN: ROCP-B
• SKU: STWROCPB
• UPC: 0813310020275
• Filter Cartridge Size: Standard 10" L x 2.5" Dia.
• System Compatibility: Sterling DWSB-TFC-50 and DWSB-50-PUMP RO Systems
• Service Interval: Replace every 12 months (or as needed based on usage and feed water quality)

Sterling ROCP-B FAQ

Does the ROCP-B filter pack include the reverse osmosis membrane?

No. The ROCP-B kit contains all the annual pre- and post-filter replacement cartridges (PB1005, GAC10, CB1005, and IC10 inline). The main RO membrane (RO-TFC50) typically lasts up to 24 months and is sold separately.

How often should I change the filters in the ROCP-B pack?

For most residential applications, changing these pre- and post-filters once per year (every 12 months) ensures proper water flow, optimal taste, and maximum protection for your RO membrane.

Which RO systems are compatible with this bundle?

This kit is specifically tailored for Sterling Water Treatment under-sink RO models DWSB-TFC-50 and DWSB-50-PUMP (DWSB-50-PermPump).

Weight	4.0 lb
Collection	CP Series
Filter Type	Carbon Block, Sediment
Flow Rate	1 GPM
Height	7.50 in.
Length	7.50 in.
Room	Kitchen
Type	Replacement Cartridges
Width	7.00 in.
Inventory Number	STWROCPB
MPN	ROCP-B

• Spec Sheet