L Pack TL1 Pre-Purification Cartridge (for RO Inlet)

Overview

The L Pack TL1 Pre-Purification Cartridge is a dedicated inline filtration module engineered for integration upstream of reverse osmosis (RO) membranes in ultra-pure water systems. Designed to protect RO elements from premature fouling and scaling, this cartridge employs a multi-stage adsorption and particulate retention mechanism—primarily utilizing high-capacity activated carbon granules combined with graded polypropylene depth filtration media. Its placement at the RO inlet ensures effective removal of chlorine, chloramines, organic contaminants (e.g., humic substances, low-MW organics), colloidal silica precursors, and suspended solids down to ≥5 µm. This pre-treatment stage is critical for extending RO membrane service life, maintaining consistent salt rejection (>98% under standard feed conditions), and reducing system downtime associated with chemical cleaning cycles.

Key Features

• Optimized dual-media design: Activated carbon bed (iodine number ≥1,000 mg/g) for chlorine/chloramine deactivation, paired with graded polypropylene melt-blown layers for progressive particle retention.
• Standard 10-inch x 2.5-inch (254 mm × 63.5 mm) industry-compatible housing interface—compatible with ANSI/NSF-certified cartridge housings used in Class I and II ultra-pure water systems.
• Maximum operating pressure rating: 10 bar (145 psi) at 25°C; temperature range: 5–40°C; maximum flow rate: 2.5 L/min at ≤2.0 bar differential pressure.
• Low extractables profile validated per USP and ISO 3696 Grade 1 specifications; non-leaching construction using food-grade polypropylene end caps and thermally bonded media matrix.
• Pre-sterilized option available (gamma irradiation, 25 kGy); EO sterilization not recommended due to carbon adsorption interference.

Sample Compatibility & Compliance

The TL1 cartridge is intended exclusively for pretreatment of municipal or well-derived feed water entering RO-based ultra-pure water generation systems. It is not suitable for direct use with high-TDS brackish water (>1,000 ppm total dissolved solids), seawater, or chemically aggressive process streams containing oxidizing biocides (e.g., ozone, hydrogen peroxide >0.1 ppm). Compliant with ISO 14644-1 Class 5 (ISO Class 5) cleanroom assembly protocols during manufacturing. Meets material safety requirements outlined in NSF/ANSI Standard 61 for drinking water system components and EU Regulation (EC) No. 1935/2004 for materials in contact with water intended for human consumption. Documentation package includes CoA (Certificate of Analysis), CoC (Certificate of Conformance), and full traceability to raw material lot numbers.

Software & Data Management

As a passive mechanical component, the TL1 cartridge does not incorporate embedded electronics or digital interfaces. However, its operational status is monitored indirectly via system-level instrumentation: real-time pressure differential sensors (ΔP across cartridge housing), integrated flow meters, and automated RO performance logging (conductivity, recovery ratio, normalized flux). When deployed within Deepflow’s DWS-3000 series ultra-pure water platforms, cartridge service life tracking is synchronized with the system’s PLC-based maintenance scheduler, supporting audit-ready records compliant with FDA 21 CFR Part 11 (electronic signatures and audit trails) and GLP/GMP documentation standards. Replacement alerts are triggered upon reaching preset ΔP thresholds (typically ≥0.7 bar) or cumulative runtime (recommended max 6 months under continuous operation at ≤2.0 L/min).

Applications

• Feed water conditioning for laboratory-scale RO/EDI ultra-pure water systems serving analytical chemistry labs (HPLC, IC, AAS, ICP-MS).
• Pretreatment in pharmaceutical QC water-for-injection (WFI) loop make-up systems where chlorine residuals must be reduced to <0.05 ppm prior to RO.
• Protection of semi-permeable membranes in research-grade water purification systems conforming to ASTM D1193 Type I and ISO 3696 Grade 1 specifications.
• Integration into modular water purification skids for university core facilities requiring scalable, NSF-compliant prefiltration stages.

FAQ

What is the recommended replacement interval for the TL1 cartridge?
Under typical municipal feed water conditions (free chlorine ≤1.5 ppm, turbidity <0.5 NTU), replace every 6 months or after 12,000 liters of throughput—whichever occurs first. Monitor differential pressure regularly; replace immediately if ΔP exceeds 0.7 bar.
Can the TL1 be used downstream of an ultraviolet (UV) disinfection unit?
Yes—UV post-treatment does not interfere with TL1 function. However, avoid installing TL1 downstream of UV if ozone is generated as a byproduct, as residual ozone will degrade carbon media.
Is the TL1 compatible with glycerin-preserved RO membranes?
Yes. The activated carbon formulation is inert toward common glycerin-based membrane preservation solutions and does not catalyze glycerin oxidation.
Does the cartridge require pre-flushing before first use?
Yes. Flush with ≥5 L of deionized water at 1.0 L/min prior to connecting to the RO system to remove loose carbon fines and stabilize pressure drop characteristics.
Can TL1 cartridges be regenerated or backwashed?
No. This is a single-pass, disposable cartridge. Regeneration is not supported due to irreversible adsorption saturation and structural integrity constraints of the depth-filter matrix.