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Koehler Microscale Continuously Closed Cup Flash Point Tester

04 Feb 2020

Under specified test conditions, when a sample is heated to the temperature called flash point, the sample vapor and air mixture are ignited instantly. Flash Point is one of the indicators for the evaluation of a materials' combustion tendency. If the flash point Is low, the combustion risk would be high. As for transport and safety regulation, flash point is used for the classification of "flammable liquids". Also, flash point is used for quality control index or determining the existence of highly volatile or flammable substances in relatively nonvolatile or nonflammable matter, e.g. lubricant mixed with a small amount of diesel or gasoline.

The Koehler K24880 Microscale Continuously Closed Cup Flash Point Tester works in the following manner. The temperature of the analyzer is adjusted to at least 18 °C below the expected flash point. The sample is injected into the sample cup. The operator must ensure that the sample and sample cup temperature are both at least 18 °C below the expected flash point (the sample and sample cup may be cooled if necessary). Then the sample cup is raised towards the oven forming a closed test chamber, which is not sealed.

After every ignition, the proper volume of air goes into the test chamber to supply the next ignition with oxygen to burn. The pressure in the unsealed closed test chamber should be ambient atmospheric pressure, except during the short period of air introduction and the time when the flash point is achieved. The pressure increase comes after discharge of air, so each time after the air discharges, the chambers pressure is higher than ambient atmospheric pressure. When the pressure increase exceeds the specified limit, this is recorded as the flash point temperature (which has not been corrected).

Koehler Microscale Continuously Closed Cup Flash Point Tester

Test the flash point of potentialy volatile liquids instantly.

Fully Automatic

  • Automatic determination of flash points
  • Automatic corrections for ambient atmospheric changes

Small Sample Size

  • Required amount of sample for each test is 1mL or 2mL
  • Smaller and safer sample sizes results in a lower test cost with less waste pollution
  • Over current and over temperature protection.

High Performance

  • Continuously closed cup operation with no open flame, a safer solution for your laboratory.
  • Built-in high efficiency refrigeration module delivers faster sample turnaround.

Industrial Touch Screen User Interface

  • 7-inch Integrated color touch screen
  • Built-in standard test methods which can be correlated to other closed cup methods
  • Real-time display of temperature and pressure curves.

USB and Network Connections

  • RS232 interface for connection to thermal printer
  • USB interface for connection with mouse or storage device
  • Internet (Ethernet) connection

Software Capabilities

  • Preprogrammed methods - each with its own interface
  • User friendly, easily toggle between parameter view and graphic view
  • When the expected flash point is entered the initial and end temperatures are automatically calculated




Conforms to the specifications of: 
ASTM D6450 and D7094
Excellent Correlation to: ASTM D93, D3828; EN ISO 6379 / 3680; ISO 2719; SH/T 0768, SH/T 3077.1, SH/T 3077.2, DL/T 1354, GB/T 261, GB/T 21615, GB/T 5208, GB/T 21790
Temperature Range:
-30 °C to 405°C (-22 °F to 788 °F) below 0 °C an external cryogenic recirculatory is required
Heating Rate:
2.5 °C/min ± 0.3 °C/min or 5.5 °C/min ± 0.5 °C/min; can be customised in the range of 0.5 to 12 °C/min
Temperature Accuracy:
± 0.1 °C
Pressure Range:0 kPa to 200 kPa
Sample Volume:1 mL or 2 mL
Ignition method:High voltage electric ignition
Stirring Rate:Can be customised from 50 RPM to 300 RPM
Interfaces:RS232, USB, Ethernet
Width x Depth x Height (cm):22.5x31x41.5


Koehler Microscale Continuously Closed Cup Flash Point Tester

Charm NovaLUM II and Field Swabs

12 Dec 2019

The F-AP Fast Alkaline Phosphatase Test (F-AP) is the fastest phosphatase method available to verify the effectiveness of pasteurization. This simple one step procedure requires no reagent preparation and delivers results in just 45 seconds.

Alkaline Phosphatase is a natural enzyme present in milk that is destroyed by conventional pasteurization. This makes Alkaline Phosphatase an excellent marker to verify the destruction of pathogenic microorganisms in HTST pasteurized dairy products.


F-AP Pocketswab plus
With detection at levels as low as 20 mU/L, well below established US and EU regulatory thresholds of 350 mU/L, F-AP provides an early warning indicator of improper pasteurization. F-AP is approved for use by US National Conference of Interstate Milk Shipments (NCIMS), and New Zealand Ministry of Agriculture and Forestry (MAF). All Australian states have also approved the method being used in accordance with manufacturer’s instructions to undertake phosphatase testing to assess the effectiveness of pasteurization for liquid milk products.


Benefits of F-AP Test Include:

  • Results in 45 seconds
  • All-in-one reagents
  • Room temperature incubation
  • Calculation of alkaline phosphatase concentration
  • Detection Limit: 20 mU/L (approximately 0.002% raw milk)
  • NCIMS, MAF and approvals across all Australian states.


Click below to find out more about Charms novaLUM II and Swabs.



novaLUM II
ATP Detection System

PocketSwap Plus



divider_02novaLUM II

Charm-novaLUM-IIAdvance sensitivity

The novaLUM® II ATP detection system utilises a technologically advanced photomultiplier tube (PMT) that is more sensitive to ATP (adenosine triphosphate) presence allowing detection of lower levels of microbial and organic matter contamination. This is a distinct advantage over systems that use less sensitive PMTs or photodiodes. The novaLUM II system’s PMT has low noise, a greater dynamic range, a faster response time and accuracy over a wider temperature range.

Cost Effective Speed

A high-speed data processor allows a quicker 5 second read time. Risks can be assessed immediately, corrective actions expedited, and production started with confidence. Reduce testing time by as much as 83% compared to other systems.

Audit Compliant

Meet internal and 3rd party audits with novaLUM II ATP detection system’s Swab Site Location, Re-test option, and a variety of other customisable features to comply with HACCP and GFSI documentation. The novaLUM II system even identifies areas that have not been re-cleaned and/or re-tested. Charm provides calibration documentation, ATP standards, comprehensive on-site trainings, and certification to meet individual requirements.

Auditors look favourably on documented random sampling and corrective action plans within ATP monitoring programs. The novaLUM II ATP detection system eliminates subjectivity by directing operators to swab randomly selected sampling points from within their pre-programmed sampling plans.

Improved Data Analytics

The novaLUM II system has improved onboard data analysis tools. This includes the ability to search historical results and add corrective action results and to generate graphs for rapid analysis of Pass/Fail percentages for key areas of the plant. With built-in wireless connectivity these graphs can be emailed to key managers immediately after test has been completed.

novaLUM II X - ATP detection system.


Quick swab insertion

No lids or latches


Faster data transfer

Rechargable / replaceable battery

9 hour run-time

Touch screen

Extremely easy menu selection

Ergonomic design

A durable molded casing allows for fast texting-like operation

High resolution display

Backlit, sunlight-readable alphanumeric display

Temperature probe / battery recharge port

Water proof port

divider_02PocketSwab Plus Swab

Pocketswab-Plus-ATP_03_03PocketSwab Plus ATP Swab
for Surface Hygiene Verification

The PocketSwab® Plus ATP (adenosine triphosphate) swab is a room-temperature stable, self-contained, single use test that enables total surface hygiene verification in only 5 seconds, allowing real-time corrective action.
This high sensitivity swab is relied on for cleaning validation, prevention of cross contamination, infection control, HACCP audits and enforcement across multiple industries.

PocketSwab Plus ATP Swab:

  • Results in 5 seconds
  • Enhanced sensitivity to ATP
  • Room temperature stable with 12-month shelf life, reducing freight costs with bulk packaging
  • Recyclable components.

PocketSwab simple procedure.

Pocketswab simple procedure


divider_02AllerGiene Swab

allergiene_03AllerGiene Swab for allergen control

The AllerGiene® ATP Swab is a simple 20-second test with super sensitivity to allergenic food residues that achieves detection comparable to specific allergen methods. The AllerGiene swab can be implemented into HARCP programs, helping manufacturers prevent allergen cross-contamination by immediately verifying the cleaning and removal of food residues from shared processing lines.

AlerGiene ATP Swab:

  • Results in 20 seconds
  • Super ATP Sensitivity = Dectection of Multiple Allergens with One Pass/Fail Threshold
  • Recyclable Components

AllerGiene simple procedure.

allergiene simple procedure


divider_02WaterGiene Swab

watergiene_03WaterGiene Swab for water quality

WaterGiene ATP Swab is a simple 20-second test with enhanced sensitivity measuring total ATP (adenosine triphosphate) in water and on wet surfaces. ATP presence is an indicator of microorganisms, plant, animal, or food material, and other biologicals. The sensitive WaterGiene swab is sutiable for testing Purified Water Systems, food processing plants, and Hospitals.

WaterGiene ATP Swab:

  • Results in 20 seconds
  • Ability to swirl in water sample or swab a surface
  • Enhanced ATP sensitivity to microbes using vacuum filtration
  • Recyclable components

WaterGiene simple procedure.

allergiene simple procedure


divider_02FieldSwab Swab

Fieldswab_03FieldSwab Swab for outdoor use

The Charm® FieldSwab® is a room temperature stable hygiene swab that rapidly detects ATP (adenosine triphosphate) as a measure of surface cleanliness. The FieldSwab is uniquely engineered to allow food safety programs to be implemented outdoors in “field” type applications or environments. Examples of outdoor applications for the FieldSwab are truck wash stations, cooling tower waters, worker hygiene compliance, and fresh-cut produce where water bio-quality, harvesting, transportation and storage equipment are monitored in just 30 seconds.

The FieldSwab is easily integrated with Good Agricultural Practices (GAP) programs, and has complete data tracking for food safety audits and trace back. ATP is present in all microbes and organic debris, which makes it an excellent indicator of surface hygiene. The FieldSwab complements the ATP based PocketSwab Plus which is used extensively by the food industry in processing and packing facilities.


  • Results in 30 seconds
  • Allows analysis outdoors in “field” type applications or environments

FieldSwab simple procedure.

Pocketswab simple procedure


Charm NovaLUM II and Field Swabs

The ideal test to determine the air release properties of petroleum oils.

31 Jul 2019

Rowe Scientific Pty Ltd would like to announce the latest product from Koehler, the K88539 Automatic Air Release Value Analyser. This innovative instrument is commonly used to determine the ability of a turbine, hydraulic or lubricating oil to separate entrained air. This is a key performance characteristic in applications where agitation causes a dispersion of air bubbles in the oil.

The test method

In order to discern air release properties, the sample is heated to a specified test temperature and blown with compressed air. After the air flow is ceased, the time required for the air entrained in the oil to reduce in volume to 0.2% gives the air bubble separation duration.

Key features

596-koehler-air-release-analyser_03Includes an integrated touch screen control panel, which guides the user from start to finish of the test operation, and provides density calculations and timing operations for measuring the air release value of the test sample. 

The test unit conforms to the American Society for Testing Materials (ASTM) D3427, IP313 and related specifications. Included is an integrated circulating bath and balance, an air bath for the sinker, an automatic lift system that moves the test vessel from air source to balance sinker, and also automatically measures the time for air release for maximum convenience and reliability.


Other state-of-the-art features include an integrated circulation bath with water level indicator, integrated balance, air tube security clamp mechanism and automatic jacketed test vessel draining.

Safety features include compressed air heater overtemperature and overpressure protection circuitry. 

Included accessories

  • Sinkers, 5mL and 10mL
  • Integrated Balance
  • Integrated Circulator
  • Air Bath for Sinker
  • Tubing and Fittings
  • Platinum Wire
  • Jacketed Test Vessel

A drying oven is available as a supplemental accessory for warming test oil to temperatures of up to 100°C


Temperature range: Ambient to 75°C

Sample Temperature Stability: ±0.1 °C

Air Temperature Stability:  ±0.2 °C

Density: ±0.001 g/mL

Download PDF Download the brochure

For further information or for a quote please contact your nearest Rowe Scientific representative.

The ideal test to determine the air  release properties of petroleum oils.