HHitech Master Touch Series Advanced Ultra-Pure Water System
| Brand | HHitech |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | Master Touch-Q/S/R/D Series |
| Price Range | USD 4,200 – 8,400 (FOB) |
| Purified Water Grade | ASTM Type I / ISO 3696 Class 1 / GB/T 6682-2008 Grade I |
| Resistivity | 18.2 MΩ·cm @ 25 °C |
| Heavy Metals & Soluble Silica | <0.01 ppb |
| Total Organic Carbon (TOC) | <3 ppb |
| Microbial Count | <0.01 CFU/mL |
| Endotoxin | <0.001 EU/mL |
| Particles (>0.1 µm) | <1 particle/mL |
Overview
The HHitech Master Touch Series is an integrated, microprocessor-controlled ultra-pure water system engineered for laboratories requiring consistent, trace-contamination-free water for critical applications including HPLC, LC-MS, ICP-MS, cell culture, molecular biology, and clinical diagnostics. Designed to treat municipal tap water as feedstock, the system employs a multi-stage purification architecture: pretreatment (PP + KDF + activated carbon), dual-stage reverse osmosis (RO), electrodeionization (EDI) or mixed-bed deionization (DI), ultraviolet oxidation (185/254 nm), ultrafiltration (UF), and terminal 0.1 µm sterile filtration. Its core performance metric—resistivity of 18.2 MΩ·cm at 25 °C—meets or exceeds international specifications for Type I reagent water per ASTM D1193, ISO 3696, CLSI C3-A4, USP , EP 2.2.43, and CAP laboratory accreditation standards. The system’s modular construction, NSF-certified fluid path components, and GLP-compliant data logging ensure regulatory readiness across GxP environments.
Key Features
- 5-inch full-color capacitive touchscreen interface with animated menu navigation, real-time system status visualization, and intuitive fingertip operation
- Triple-point water quality monitoring: source water, RO permeate, and UP product water—displayed continuously without manual sampling
- Dual independent quantitative dispensing: programmable volume (10–999,999 mL) and resistivity-triggered dispensing (0.0–18.25 MΩ·cm)
- Comprehensive consumables lifecycle management: configurable service intervals, cumulative usage tracking, and automated replacement alerts for PP, KDF, AC, RO, DI, UP, UV, UF, and TF modules
- Multi-level alarm system: low-source-pressure, tank overflow, conductivity/resistivity excursions (at all three monitoring points), UV lamp failure, and UF membrane integrity warnings
- GLP-compliant data recording: one-year internal storage of operational logs (flow rates, resistivity trends, alarm events, consumables usage); exportable via USB 2.0 or SD card in CSV format
- NSF/ANSI 61-certified wetted materials: 316L stainless steel UV chamber, PES terminal filter (0.45 + 0.1 µm), and food-grade engineering plastics throughout the chassis
- Energy-efficient recirculation loop with programmable intermittent operation to suppress microbial regrowth while minimizing power draw
- On-demand sanitization protocols: selectable “loop disinfection”, “point-of-use disinfection”, “tank refill”, “manual drain”, and “disinfection abort” sequences
- Automated RO membrane antiscalant flush: user-definable interval (1–720 hours) and duration (10–180 seconds), plus manual override
Sample Compatibility & Compliance
The Master Touch Series delivers water suitable for high-sensitivity analytical and life science workflows where background interference must be minimized. Its output meets stringent purity requirements for nucleic acid amplification (PCR/qPCR), monoclonal antibody production, stem cell expansion, and endotoxin-sensitive assays (e.g., LAL testing). All models comply with ISO 13485 design control principles; electrical safety conforms to IEC 61010-1. Fluid path components—including tubing, fittings, and housings—are certified to NSF/ANSI 61 for drinking water system components, ensuring negligible leachables contribution to TOC (<3 ppb) and metals (<0.01 ppb). Endotoxin levels (<0.001 EU/mL) and RNase/DNase activity (<1 pg/mL and <5 pg/mL, respectively, on UF-equipped variants) satisfy USP and criteria for parenteral preparation support. Full audit trail capability—including operator ID, timestamped parameter changes, and alarm acknowledgments—supports FDA 21 CFR Part 11 compliance when deployed with validated electronic signature protocols.
Software & Data Management
Embedded firmware supports continuous time-stamped logging of >20 parameters: feed pressure, RO rejection rate, UP resistivity, TOC concentration, UV intensity, UF transmembrane pressure, flow rate, ambient temperature, and consumables runtime. Data is stored in non-volatile memory with cyclic overwrite protection for critical alarm records. USB export enables integration into LIMS or ELN platforms; exported files include metadata headers compliant with ASTM E2500-18 for instrument qualification documentation. Password-protected dual-access hierarchy (factory technician level and lab administrator level) governs calibration adjustments, alarm thresholds, and system configuration. Built-in clock synchronization supports scheduled standby (0–60 min) and shutdown (0–24 h), reducing overnight energy consumption without compromising readiness.
Applications
- HPLC and UHPLC mobile phase preparation and column equilibration
- ICP-MS and GF-AAS blank matrix generation and diluent formulation
- Cell culture media and buffer preparation for primary and immortalized mammalian lines
- Next-generation sequencing library preparation and CRISPR-Cas9 editing workflows
- Pharmaceutical stability studies and extractables/leachables testing per USP
- Clinical diagnostic assay calibration and QC material reconstitution
- Electrophysiology and patch-clamp solutions requiring ultra-low ionic background
- Trace metal analysis in environmental and geological samples
FAQ
What feed water quality is required for optimal RO membrane life?
Municipal tap water with total dissolved solids (TDS) ≤ 500 ppm, chlorine ≤ 1.0 ppm, and turbidity ≤ 1 NTU is recommended. Pre-treatment with KDF-55 and coconut-shell activated carbon ensures effective chlorine and heavy metal removal prior to RO.
Can the system be integrated into a central purified water distribution loop?
Yes—the Master Touch-R and -S series support optional 0–10 V analog output and Modbus RTU RS-485 communication for PLC interfacing and building management system (BMS) integration.
How often must the UP polishing cartridge be replaced?
Replacement frequency depends on daily usage volume and inlet water quality; typical service life ranges from 6–12 months under standard lab conditions (≤ 100 L/day). The system calculates remaining capacity based on cumulative ion exchange load and triggers alerts at 90% depletion.
Is third-party validation support available?
HHitech provides IQ/OQ documentation templates aligned with ASTM E2500 and EU Annex 15; on-site PQ assistance and vendor-qualified calibration services are available through authorized regional partners.
Does the system meet ISO 14644-1 Class 5 cleanroom requirements for water dispensing?
While the unit itself is not classified as cleanroom equipment, its terminal 0.1 µm sterile filter and laminar-flow dispensing arm (optional) enable point-of-use delivery meeting ISO 14644-1 Class 5 particulate limits when installed in controlled environments.
