Innovation in Automation
Author

Alistair Geach

Chief Technology Officer, CINRG Systems Inc.

Built to standards
ASTM D7647 · D7279 · D5185
ISO 11171:2022
NIST SRM 2806d traceable
Alistair Geach, Chief Technology Officer of CINRG Systems Inc.
Chief Technology Officer

Alistair Geach, CLS

CTO & co-founder, CINRG Systems Inc.

Alistair has spent 28 years in oil-analysis instrument development, and is the technical architect behind CINRG’s entire instrument line — the CS-APC auto-diluting particle counters, the CS-HVA robotic Houillon viscometer systems, the CS-SDS-2 sample dilution system, and the CINSTAN secondary calibration fluids. He was formerly with SetPoint Technologies in South Africa, where his combined background in chemistry, physics, and engineering produced his first generation of laboratory automation work.

CLS OMA I MLA I LLA I
alistair.geach@cinrg.com ☎ +1 905 569-8600 x4646 Direct +1 289 291-4646
Background

From SetPoint to CINRG — an instrument-development career

Alistair’s career started at SetPoint Technologies in South Africa, where his combined skills in chemistry, physics, and engineering put him squarely in laboratory-instrument development. That foundation — understanding both the chemistry of the sample and the mechanics of the instrument that has to handle it — is the design ethos that runs through every CINRG product today.

He joined what would become CINRG Systems by way of the WearCheck Canada laboratory in Toronto, where the original auto-diluting particle counter was developed in-house to solve the lab’s real production problem with heavily contaminated and opaque samples. Alistair was the lead designer on that prototype, the APC-1, which evolved into the CS-APC-2 and the production CS-APC-3 / CS-APC-22M lines. The same engineering approach extended to the CS-HVA robotic viscometer system — a four-axis robot, syringe pump, and wash-station ecosystem built around ISL/PAC Houillon viscometer baths — and to the CS-SDS-2 sample dilution system for ICP-AES sample preparation under modified ASTM D5185.

Alongside the instrumentation work, Alistair has led CINRG’s engagement on calibration-standards development. He was the CINRG-side technical lead in the NIST interlaboratory study to certify SRM 2806e and 2806f — the next two batches of primary calibration fluid for ISO 11171. To take part, CINRG built a bottle-sampler particle counter (the CS-APC-BS) in roughly three weeks and submitted full Annex A–E calibration data to NIST. The certification work positions CINSTAN as a directly NIST-traceable secondary standard going into the next decade of cleanliness reporting. CINRG also engages with the ASTM D02.96 work group revising D7647, contributing operational data and customer perspectives as the method moves toward an automated Procedure A and a manual Procedure B.

Alistair is a frequent presenter at OilDoc, LUBMAT, and Lube Expo conferences, and has authored or co-authored CINRG’s most-cited technical papers — on the NIST 2806b transition, particle counting of opaque and heavily contaminated samples, and the ghost-particle phenomenon.

Areas of expertise

Where Alistair works

Optical particle counter design

Light-extinction sensor selection, signal-to-noise verification, sensor-noise procedures, KLOTZ LDS integration, multi-channel KLOTZ USB counters.

Auto-dilution methodology

ASTM D7647 method development, masking-solvent selection (75/25 and 90/10 toluene/IPA), volume metering, solvent verification routines.

Robotic viscometer automation

ASTM D7279 Houillon viscometer integration, fuzzy-logic tube selection, multi-point calibration, syringe-wash station design.

ICP-AES sample preparation

Modified ASTM D5185 (D5185m) volume/volume dilution, piston-driven needle systems, <0.1% carry-over engineering.

ISO 11171 calibration

Annex A–E factory calibration procedures, NIST SRM 2806 family transitions, ILS participation for SRM 2806d / 2806e / 2806f, µm(b) to µm(c) reporting.

CINSTAN reference materials

Secondary calibration, verification and process-control fluids; NIST traceability; CINSTAN-CFK calibration kit, CINSTAN-PCS, CINSTAN-VF formulations.

Standards Activity

Standards bodies & methods

Active in the development of methods CINRG instruments are built around.

NIST ILS — SRM 2806e & 2806f
CINRG-side technical lead for the interlaboratory study certifying the next two batches of NIST primary calibration fluid; one of 14 sensors across 4 countries participating.
ISO 11171:2022
Implementer of the current calibration procedure across the CINRG CS-APC line, including Annex A–E factory calibration and the laboratory sizing-calibration workflow.
ASTM D7647 work group
CINRG contributor to the ASTM D02.96 work group revising D7647, including the move to a Procedure A (automated, 90/10 toluene/IPA referee procedure) and Procedure B (legacy manual workflow).
ASTM D7279-14
Implementer of the kinematic-viscosity test method by automated Houillon viscometer in the CS-HVA-2 and CS-HVA-4 robotic systems.
Publications

Selected papers, presentations & white papers

Conference papers and technical white papers authored or co-authored by Alistair.

Conference papers & presentations

  • 2025OilDoc Conference, Rosenheim, Germany
    With Bill Quesnel and Sonia Hevia (HF Sinclair / Petro-Canada Lubricants). The role of soft particles — water, varnish precursors, anti-foam additives, friction modifiers — in inflated optical particle counts, with comparative ISO codes for seven dilution solvents.
  • 2023OilDoc Conference, Rosenheim, Germany
    Full-day workshop: ASTM D7647 methodology, ISO 11171 calibration, NIST SRM 2806 history, the µm(b)/µm(c) transition, IVL settings, process-control workflows, and CS-APC ISO 17025 validation.
  • 2017OilDoc Conference, Rosenheim, Germany
    With Bill Quesnel. Quantitative documentation that 2806b certified counts ran 49% higher at >4µm, 45% at >6µm, and 86% at >14µm than 2806a, with the practical impact on cleanliness reporting and filter beta ratios. The most-cited CINRG technical paper.
  • 2017OilDoc Conference, Rosenheim, Germany
    Full conference paper: methodology and operational data on the CS-APC-2 auto-diluting particle counter under ASTM D7647.
  • 2016LUBMAT, Bilbao, Spain
    With Bill Quesnel. ASTM D7647 dilution methodology applied to commercial oil-analysis throughput, with comparative results across customer sites.
  • Performing Particle Counting on Opaque and Heavily Contaminated Samples
    2015OilDoc Conference, Rosenheim, Germany
    With Bill Quesnel. The original CINRG paper documenting how auto-dilution allows a single optical sensor to count both very clean and very contaminated samples without manual filtration to a Millipore patch.

White papers & technical notes

  • 2013CINRG White Paper
    An overview of the capabilities, operating process, and system specifications for the CS-APC-2 fully automatic auto-diluting particle counter.
  • 2014CINRG White Paper
    Co-developed with WearCheck Canada. Heavily contaminated oil samples that normally could not be processed by an optical particle counter were successfully tested on the CS-APC-2 using auto-dilution.
  • ILS & ASTM D7647 — CINRG Position Paper
    2025CINRG Technical Paper
    CINRG’s position on the upcoming ASTM D7647 interlaboratory study and the proposed split into Procedure A (automated, 90/10 toluene/IPA) and Procedure B (manual). Addresses sample-set design, diluent restrictions, and labour-cost realities.
  • Sensor Noise Measurement Check — APC2 / APC3 / APC22M
    ProcedureCINRG Technical Note
    Step-by-step procedure for verifying the LDS sensor noise threshold against Super Clean Fluid before annual sizing calibration. Defines the signal-to-noise ratio acceptance bounds (≥1.5 preferred, ≥1.2 minimum).
  • 2025CINRG Newsletter
    CINRG update for WearCheck International on NIST SRM 2806e/2806f ILS participation, CINSTAN secondary fluids, and ASTM D7647 revision activity.

Get in touch with Alistair

For technical questions on automated particle counting, robotic viscometry, ISO 11171 calibration, or instrument validation.

Email Alistair CINRG Contact Form
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