HHitech R-DIS-I/II Remote Mobile Dispensing Arm

Overview

The HHitech R-DIS-I/II Remote Mobile Dispensing Arm is an engineered solution for high-precision, ergonomic water dispensing in modern analytical and life science laboratories. Designed to interface with ultrapure water systems—whether centralized distribution networks or point-of-use purification units—the R-DIS leverages real-time conductivity (resistivity) monitoring, volumetric flow control, and closed-loop recirculation to maintain Type I ultrapure water quality (≥18.2 MΩ·cm at 25 °C) at the point of use. Unlike conventional fixed faucets or basic dispensers, the R-DIS integrates electrochemical sensing, microprocessor-based flow regulation, and human-centered mechanical design to eliminate cross-contamination risks, minimize operator fatigue, and ensure metrological traceability across dispense events. Its modular architecture supports both standalone deployment (R-DIS Standalone) and seamless integration into HHitech’s Touch-series intelligent water management platforms (R-DIS-I and R-DIS-II), enabling remote operation, audit-ready data logging, and system-level water quality diagnostics.

Key Features

• Ergonomic, detachable dispensing handle with pipette-style actuation—optimized for single-hand operation and precise tactile feedback
• Height-adjustable arm (range: 200–450 mm) accommodating standard labware including volumetric flasks (50–2000 mL), graduated cylinders, and plastic carboys
• Tempered glass work surface (222 × 150 mm) with integrated 2.0-inch color TFT display showing real-time resistivity (MΩ·cm), temperature (°C), instantaneous flow rate (mL/min), and cumulative dispensed volume (mL)
• Dual dispensing modes: “On-Demand” (press-and-hold activation) and “Programmed Volume” (10–9990 mL range, adjustable via ± soft keys with ±0.5% volumetric repeatability)
• Internal recirculation loop with low-shear pump maintains continuous circulation of ultrapure water within the dispensing manifold, suppressing microbial growth and minimizing TOC drift
• Standalone variant (R-DIS Standalone) includes integrated conductivity sensor (0.01–18.2 MΩ·cm), thermal-compensated flow meter (0.1–3.0 L/min), and embedded PID controller—enabling direct connection to any ultrapure water source without requiring proprietary system compatibility

Sample Compatibility & Compliance

The R-DIS is validated for use with Type I ultrapure water per ISO 3696:1987 and ASTM D1193-20, and complies with critical performance criteria outlined in CLSI EP23-A and USP . Its wetted path materials—including PFA-lined stainless steel tubing, EPDM-free fluidic seals, and borosilicate glass–compatible dispensing tips—ensure extractables and leachables remain below ICH Q5A thresholds. The device supports GLP/GMP workflows through configurable user access levels, electronic signature support (per FDA 21 CFR Part 11 when paired with Touch system firmware v3.2+), and timestamped event logs capturing operator ID, dispense volume, resistivity deviation (>±0.1 MΩ·cm), and ambient temperature. Calibration certificates for integrated sensors are NIST-traceable and provided with each unit shipment.

Software & Data Management

The R-DIS-I and R-DIS-II models communicate bidirectionally with HHitech Touch Control software via RS485/Modbus RTU or optional Wi-Fi module (IEEE 802.11n). This enables centralized configuration of dispensing protocols, remote firmware updates, and export of CSV-formatted usage reports—including daily dispense count, total volume per user, resistivity trend analysis, and alarm history (e.g., low-resistivity alerts, flow obstruction detection). The Standalone variant stores up to 10,000 dispense records internally and supports USB-C data dump for offline review. All variants generate audit trails compliant with ISO/IEC 17025:2017 clause 7.9 requirements for measurement traceability and result integrity.

Applications

• HPLC and LC-MS mobile phase preparation requiring consistent resistivity and low TOC
• Cell culture media formulation where endotoxin and nucleases must be minimized via non-contact, recirculated delivery
• Calibration standard preparation in reference labs adhering to ISO/IEC 17025 accreditation
• High-throughput screening workflows demanding rapid, repeatable volumetric delivery across multiple bench positions
• Centralized ultrapure water systems serving multi-floor facilities—where R-DIS Standalone units serve as intelligent endpoint monitors and dispensers at branch points

FAQ

Can the R-DIS be used with non-HHitech ultrapure water systems?
Yes—the R-DIS Standalone model operates independently with any ultrapure water source delivering ≥18.0 MΩ·cm resistivity and 0.2 µm filtered output.
Is the resistivity sensor factory-calibrated and field-serviceable?
Each unit ships with a NIST-traceable calibration certificate; sensor recalibration is supported via Touch software or manual 2-point KCl standardization using built-in calibration mode.
Does the R-DIS meet electromagnetic compatibility (EMC) standards for laboratory environments?
Yes—it complies with IEC 61326-1:2020 Class A emission limits and immunity requirements for industrial locations, verified per EN 61000-6-2 and EN 61000-6-4.
What is the maximum allowable inlet pressure for the R-DIS Standalone?
Operating pressure range: 0.1–0.6 MPa (1–6 bar); integrated pressure regulator ensures stable flow performance across variable feed conditions.
Can dispense logs be exported in machine-readable format for LIMS integration?
Yes—CSV exports include ISO 8601 timestamps, operator IDs, volume values, resistivity readings, and status flags; API access is available via Touch system’s RESTful interface (v4.0+).