ROClean A Acid Cleaning Kit with 12 Tablets

Overview

The ROClean A Acid Cleaning Kit is a purpose-engineered maintenance solution designed specifically for the safe, effective, and repeatable chemical decontamination of critical components within ultra-pure water (UPW) systems. Unlike generic laboratory cleaners, ROClean A utilizes a precisely formulated solid-phase citric acid–based tablet formulation optimized for low-residue dissolution, controlled pH modulation (targeting pH 2.0–2.5 in standard dilution), and compatibility with stainless steel 316L, PVDF, and EPDM wetted materials commonly found in UPW generation and distribution assemblies. The kit operates on a validated cleaning principle: chelation-driven removal of metal oxide deposits (e.g., Fe₂O₃, NiO), carbonate scale, and trace heavy metal contaminants that accumulate over time on conductivity/resistivity cells, online TOC sensor flow cells, and recirculation pump impellers—thereby restoring measurement accuracy, minimizing drift, and extending component service life without requiring disassembly or aggressive nitric/hydrochloric acid handling.

Key Features

• Pre-weighed, stabilized citric acid tablets (1.5 g ± 0.05 g per tablet) ensure consistent dosing and eliminate manual weighing errors.
• Non-oxidizing, chloride-free chemistry prevents pitting corrosion on 316L stainless steel piping and sensor housings—critical for ISO 14644-1 Class 4–5 cleanroom UPW loops.
• Low foaming profile enables use in pressurized recirculation cleaning protocols without air entrapment or sensor signal interference.
• Residue-free rinse profile verified by <10 ppb total organic carbon (TOC) post-rinse when following recommended 3× volume flush protocol (per ASTM D5127 Annex A3).
• Stable shelf life of 24 months when stored sealed at 15–25°C; no refrigeration required.
• Each tablet dissolves fully within 90 seconds in 500 mL deionized water at 25°C, generating a homogeneous cleaning solution with minimal particulate carryover.

Sample Compatibility & Compliance

ROClean A is validated for use with UPW system components compliant with ASTM D5127 (Standard Guide for Ultra-Pure Water Used in the Electronics Industry), USP (Water for Pharmaceutical Purposes), and ISO 3696 (Grade 1 water specifications). It is compatible with inline resistivity sensors (0.055–18.2 MΩ·cm range), UV-oxidizable TOC analyzers (e.g., Sievers 900 series, ELGA Purelab Chorus), and recirculation pumps rated for pH ≥2.0 operation. The formulation meets RoHS Directive 2011/65/EU restrictions on hazardous substances and carries full SDS documentation aligned with GHS Rev. 8. While not classified as a hazardous material under UN TDG or IATA regulations, it is supplied with UN3077 (Environmentally Hazardous Substance, Solid, N.O.S.) labeling per customer request for international logistics compliance.

Software & Data Management

ROClean A itself is a consumable reagent kit and does not incorporate embedded firmware or digital interfaces. However, its usage is fully integrable into computerized maintenance management systems (CMMS) and electronic batch record (EBR) platforms via standardized SOP referencing (e.g., SOP-UPW-CLEAN-007). Each kit includes a serialized lot label enabling traceability to manufacturing date, stability testing data, and raw material COA (Certificate of Analysis) available upon request. For facilities operating under FDA 21 CFR Part 11 requirements, cleaning logs generated using ROClean A may be captured in validated LIMS or MES environments with full audit trail support—including operator ID, start/end timestamps, rinse conductivity values (<0.1 µS/cm), and final rinse TOC confirmation (<10 ppb).

Applications

• Quarterly scheduled cleaning of resistivity sensor electrodes in point-of-use (POU) purification modules.
• Recovery intervention after elevated TOC excursions (>500 ppt) traced to distribution loop biofilm or metal leaching.
• Pre-commissioning passivation verification for newly installed UPW piping networks prior to system qualification (IQ/OQ).
• Maintenance of ultraviolet (UV) lamp quartz sleeves where mineral scaling reduces 185/254 nm transmission efficiency.
• Decontamination of high-purity filter housings (e.g., 0.1 µm PTFE membrane cartridges) between integrity test cycles.

FAQ

Can ROClean A be used for stainless steel electropolished piping passivation?
No. ROClean A is designed for routine cleaning—not passivation. Passivation requires nitric or citric acid solutions at elevated temperatures (≥50°C) and extended dwell times per ASTM A967 or AMS 2700; ROClean A is formulated for ambient-temperature, short-duration (15–30 min) cleaning only.
Is rinsing validation required after ROClean A treatment?
Yes. Final rinse conductivity must be ≤0.1 µS/cm and TOC ≤10 ppb, measured per ASTM D5127 Section 8.1, prior to system return-to-service.
Does ROClean A contain any phosphates or silicates?
No. The formulation is strictly phosphate-free, silicate-free, and amine-free to prevent downstream membrane fouling or interference with low-level ion chromatography analysis.
What is the maximum recommended storage temperature?
25°C. Prolonged exposure above 30°C may accelerate citric acid hydrolysis and reduce tablet integrity; humidity control (<60% RH) is advised.
Can ROClean A tablets be dissolved in hot water to accelerate dissolution?
Not recommended. Temperatures >40°C risk premature degradation of stabilizers and increase potential for localized crystallization upon cooling—both compromising cleaning efficacy and rinse residue performance.