Ismatec ISM936D High-Precision 8-Channel Planetary Gear Peristaltic Pump

Overview

The Ismatec ISM936D is an engineered solution for ultra-low-flow, high-precision fluid handling in analytical, bioprocessing, and quality control laboratories. As a digitally controlled, 8-channel planetary gear peristaltic pump, it operates on the principle of positive displacement via sequential compression of flexible tubing by rotating stainless steel rollers. Its planetary gear reduction mechanism delivers exceptionally smooth torque transmission—minimizing pulsation amplitude and mechanical stress on tubing—thereby enhancing flow stability and extending tube service life. Designed for continuous-duty operation under GLP-compliant environments, the ISM936D supports reproducible micro-dosing across parallel streams without cross-contamination, making it suitable for applications requiring trace-level accuracy and long-term operational reliability.

Key Features

• Planetary gear drive architecture ensures low-speed torque consistency and <1% flow pulsation—critical for sensitive detection systems such as HPLC sample introduction or electrochemical cell feeding.
• Eight independently actuated stainless steel rollers provide uniform occlusion and symmetrical compression across all channels, maintaining inter-channel flow deviation within ±1% at steady-state conditions.
• Digital speed control with 0.11–11.25 rpm range enables precise modulation of volumetric delivery down to 0.0004 mL/min—ideal for nanoliter-per-minute dosing in assay development or microreactor feeding.
• Integrated 4-digit LED display offers real-time feedback of setpoint and actual speed, supporting immediate verification and protocol traceability during routine QC procedures.
• Auto-engaging quick-clamp mechanism eliminates manual alignment variability; each pump head achieves repeatable tubing seating with ≤0.5% positional deviation between installations.
• Multi-mode operation—including volumetric dispensing, timed delivery, batch counting, drip-free termination, and continuous flow—facilitates seamless integration into automated workflows governed by SOPs.

Sample Compatibility & Compliance

The ISM936D accommodates standard 2-stop peristaltic tubing (e.g., PharMed BPT, Tygon E-3603, or C-Flex), with internal bore diameters ranging from 0.1 mm to 1.6 mm. Its pressure rating of 1.5 bar (22 psi) permits compatibility with moderate backpressure scenarios typical in inline filtration or capillary-based manifolds. The pump meets IEC 61010-1 safety requirements for laboratory equipment and complies with electromagnetic compatibility standards EN 61326-1. While not intrinsically rated for hazardous locations, its design supports deployment in ISO 17025-accredited labs where instrument qualification (IQ/OQ/PQ) and audit-ready documentation are required. All firmware operations log timestamps and user inputs, aligning with FDA 21 CFR Part 11 data integrity expectations when paired with validated host software.

Software & Data Management

Remote analog and digital interfaces—including 0–5 VDC, 0–10 VDC, 0–20 mA, and 4–20 mA—enable direct integration with PLCs, SCADA systems, or LIMS platforms without intermediate converters. Optional RS-232 or USB-to-serial adapters support ASCII command protocol communication for script-driven control via Python, LabVIEW, or MATLAB. The pump’s internal memory retains last-used parameters across power cycles, and external software can trigger event-based logging (e.g., volume dispensed per channel, runtime duration, error codes). Audit trails generated through compatible host applications satisfy ALCOA+ principles—ensuring attributable, legible, contemporaneous, original, accurate, complete, consistent, enduring, and available records for regulatory review.

Applications

• Automated reagent dispensing in ELISA and PCR setup workstations
• Continuous feed of calibration standards in ICP-MS or AAS sample introduction systems
• Parallel solvent delivery in multi-stream gradient HPLC or SFC methods
• Precise nutrient infusion in perfusion bioreactors and organ-on-chip platforms
• Low-flow buffer exchange in size-exclusion chromatography (SEC) fraction collection
• Controlled eluent delivery in ion chromatography with suppressed conductivity detection

FAQ

What tubing sizes are supported by the ISM936D?
The pump is optimized for 2-stop tubing with inner diameters from 0.1 mm to 1.6 mm; recommended wall thicknesses range from 0.8 mm to 1.2 mm for optimal occlusion and fatigue resistance.
Can the ISM936D be integrated into a GMP manufacturing environment?
Yes—when deployed with validated control software and documented IQ/OQ protocols, the ISM936D supports GMP-aligned processes requiring calibrated, auditable fluid delivery with defined uncertainty budgets.
Is firmware update capability available?
Firmware updates are performed via serial interface using Ismatec-provided utilities; version history and change logs are maintained per ISO 13485 documentation requirements.
How does the planetary gear design reduce maintenance frequency?
By distributing mechanical load across multiple gear stages and minimizing peak roller acceleration, the planetary architecture reduces tubing wear rates by up to 40% compared to conventional stepper-motor-driven peristaltic pumps.
Does the pump support bidirectional flow?
No—the ISM936D operates in unidirectional mode only; reversal requires external valve manifold configuration.