ASTM D7647-10 Ready

The system meets the requirements of ASTM D7647-10 in which oil samples are diluted prior to testing to eliminate interferences from "soft" particles.


Fully Automated

Samples are batched by quickly pouring suitable volumes of homogenized sample into 2oz (32ml) sample cups that are placed in the 104 position sample tray.



Samples do not require accurate dispensing as the volume of the sample in each cup is measured automatically by the system to an accuracy of ±2% prior to dilution.

“The first fully automated auto-dilution particle counter for ASTM D7647-10“

Leading Edge Technology

The CINRG CS-APC-2 particle counting system is a fully automated system that meets the requirements of ASTM D7647-10 in which oil samples are diluted with solvent prior to testing in order to eliminate interferences from ”soft” particles such as water, varnish and suspended liquid additives.

The system combines equipment from several leading equipment manufacturers with some innovative technology and sophisticated software that was developed by Wearcheck for use in their oil analysis laboratory. The system has a high degree of flexibility and can be customized to a large extent to suit local laboratory processing requirements.


Complete Automation

A batch of samples can be quickly prepared by pouring suitable volumes of homogenized sample into 2oz (32ml) sample cups that are then placed in a 104 position sample tray. Samples do not have to be accurately dispensed into the sample cups as the volume of the sample in each cup is measured by the system to an accuracy of ±2% prior to dilution. Laboratory technicians can easily control sample dilution by controlling the amount of sample that is poured into the cup as all samples are diluted to a final volume of 30ml.

If a higher degree of accuracy than ± 2% is desired for the volume measurement samples may be pipetted or weighed into the cups and the sample volume or sample weight and sample density included in the systems batch file.


Handles a Wide Range of Viscosities

As samples are diluted prior to testing and dilution ratios can be varied between 1:0 (no dilution) and 1:9 (one part oil and 9 part solvent) it is possible to process samples having a wide range in viscosities. A 1:4 dilution for example, is more than adequate to process an oil sample with a viscosity of 1,000 cSt @ 40°C.

Samples can be processed without dilution if required but viscosity of these samples should be ≤46 Cst.


Highly Customizable Automation

A batch file containing both sample information and processing parameters is required by the application software in order to process samples and this can be created within the software itself or imported from an external file in csv format. The sample information part of the batch file contains the sample ID, the sample position within the tray and if applicable, a sample volume or sample weight and density. If the sample volume and weight fields are blank the system will measure the volume of oil in the sample cup prior to sample dilution.

The process parameters control how the sample is processed prior to testing. The parameter settings determine how fast and for how long a sample is stirred and determine how a sample is degassed if this process is required. The report format can also be specified in the batch file (ISO 4406 or AS4059).

The parameters are typically in the range of 1 to 4 with the actual value of each setting being determined by system parameters that can be modified by the end user. E.g. Sample stirring times of 1,2 and 3 in the batch file could be defined as 15,20 and 30 seconds in the system parameters.


Automatic Solvent Verification

Before any testing is conducted the cleanliness of the batch of dilution solvent has to be determined to obtain the count data that is subsequently used to correct the particle count results for the effects of dilution. When selected in the application software a solvent verification is carried out automatically. Solvent is initially loaded into the sample cup in position 1 for use as a system flush and then into the sample cup in position 2 for actual measurement. Several measurements are conducted on the solvent and the suitability of the solvent is established by comparing the counts from each measurement against a set of system parameters that again can be modified by the end user to meet specific needs.

When sufficient data has been collected average count values are calculated from valid measurements and stored as the solvent background counts for subsequent calculations.

Urgent Samples

The sample batch file remains accessible even after processing has started and may be edited at any time to add to or remove samples from a batch or to set a priority flag within the batch to allow a sample to be processed out of sequence. It is not possible to edit samples that have already been processed or edit the sample that is in process at the time of editing.

Process Control Samples

A customizeable suffix identifies process control samples for which count data is compared against upper and lower user defined limits in the 4µm, 6µm and 14µm range to confirm acceptable system performance. A system parameter controls how the system proceeds following an unsatisfactory result on a process control standard.


The output format is defined in the sample batch file and the data exported can be easily customized using system parameters. With the system parameters it is possible to include such information as solvent background counts, sample volume, sample dilution ratio, and all raw count data in the output file.