The ability of a lubricating oil to separate from water and resist emulsification is an important performance characteristic for applications involving water contamination and turbulence. Water separability is determined by stirring equal volumes of water and sample together at a controlled temperature to form an emulsion and observing the time required for separation of the emulsion to occur. This method is suitable for petroleum oils and synthetic fluids.

Tests emulsion characteristics of lubricating oils.
Seven sample capacity.

Movable digital stirrer with microprocessor control incorporates advanced features for flexibility and ease of operation.

Clear, illuminated heating bath provides excellent visibility.
Microprocessor temperature control with digital display and built in protection against over-temperature and low liquid level hazards.

Conforms to ASTM, ISO and related standards for water separability testing.
Optional sensor for direct measurement of sample temperature.

The Lovibond Colour and AOCS-Tintometer Colour scales are popular quantitative methods of colour measurement that have gained widespread international acceptance, particularly with processors of oils and oil derivatives.

In addition, certain product sectors have adopted one-dimensional scales such as Gardner and FAC Colour to simplify colour control when the range of sample colours involves varying intensities of a single hue.

To satisfy the diverse requirements for colour data, the Lovibond PFX995/950/880 series of high-precision, spectrophotometric colorimeters offers a choice of more than 20 colour scales. The standard versions vary from focussed instruments for Lovibond Colour or AOCS-Tintometer Colour through to a flexible, full-scale package.

Additional scales can be added as optional upgrades, either at the time of purchase or at a later date.

The Titra-Lube laboratory method is run as follows:

A sample of the lubricant to be tested is weighed out into a disposable test tube. The amount of sample used in grams is determined by dividing 16 by the expected TBN value of the sample. The maximum amount of sample to be used is 2 grams.

The tube is filled to a 5 mL line with a high flash point hydrocarbon based solvent and the tube is capped and shaken until the sample is totally dissolved.

3.1.5 mL of 0.40 M isopropyl HCl is added to the tube and it is shaken for 30 seconds.

12 mL of aqueous extract solution is added and the mixture shaken for 30 seconds.

The two phases are allowed to separate for 3 minutes.
The aqueous layer is decanted off and 10 mL is transferred to a titration beaker.

12 mL of additional aqueous extract solution (clean) is added to the beaker and the solution is titrated with 0.0425 N NaOH to the inflection point. The titration can be done manually or with an automatic titrator.

TBN is calculated as follows:
TBN = 3.20 (Vb1-V5)/Ws, where Vb1 is the amount of titrant used to titrate a 0 TBN blank sample, Vs is the volume of titrant needed to titrate the sample being analyzed, and Ws is the weight of the sample used in the procedure.


Traditional TBN methods D-2896 and D-4739 require than a non aqueous hydrocarbon sample be dissolved in a solution capable of facilitating an acid-base reaction and titration. This requirement limits the method to using a limited number of powerful solvents, usually chlorinated ones. More polar solvents could not dissolve the oils and less polar ones would not permit a potentiometric titration to take place. The Titra-Lube laboratory method circumvents this problem by performing the test in two steps. In the first step, the oil is dissolved in a non-polar solvent and reacted with an isopropyl HCl solution which also easily dissolves in the solvent.

The solution is then mixed with an aqueous extractant which removes any excess acid from the non-polar solvent and isolated it in the aqueous phase. This aqueous phase is then physically separated from the oil and placed into the titration beaker. The acid/base titration then proceeds much more quickly than in other methods because the titration is taking place in a strictly aqueous medium. The titration itself takes about 3 minutes where previously it would take up to 30 minutes because of the time necessary for the elect rode to stabilize in the non-aqueous solution.

Test Method

Determines a lubricant’s ability to prevent rusting of metal surfaces. Suitable for steam turbine oils, gear oils, hydraulic oils and other types of inhibited mineral oils. A steel test specimen is immersed in a heated mixture of sample oil and water which is stirred continuously during the test. After the test period the specimen is examined for rusting. The standard (ASTM D665) method uses a vertical specimen; the ‘horizontal disc method’ (ASTM D3603) uses both horizontal and vertical test surfaces.

Features and Benefits
Conforms to ASTM D665, D3603 and NACE TM-01-72* specifications
Accommodates six sample beakers
Microprocessor programmable high accuracy temperature control
K30160 Rust Preventing Characteristics Oil Bath

Constant temperature bath with stirrers for rust preventing characteristics tests. Stirs sample-water mixtures at 1000rpm and controls temperature with ± 0.5°C (± 1°F) stability. Immerses test beakers at the proper depth per ASTM specifications.

Microprocessor PID control provides quick temperature stabilization without overshoot, and the bath is protected by an overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point. Dual LED displays provide actual and setpoint temperature values in °C/°F format. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information.

Stainless steel stirrer paddles are driven by a ball bearing type motor through an improved pulley drive-roller bearing arrangement.

Paddles can be raised and lowered for placement of sample beakers in the bath. Includes test specimens, holders and beaker covers for ASTM D665 or D3603 testing (see specifications and ordering information). Stainless steel bath includes perforated support shelf for beakers and two-position cover plate that adjusts for either ASTM D665 or D3603 testing. Long-lasting polyester drive belt improves reliability. Drive train components are protected by a removable steel guard. All exterior surfaces have stainless steel or chemical resistant polyurethane enamel finishes.


Conforms to the specifications of: ASTM D665, D3603, D6158; NACE TM-01-72; IP 135; ISO 7120; DIN 51355, DIN 51585; FTM 791-4011, 791-5315; NF T 60-151
Testing Capacity: Six (6) 400mL sample beakers
Maximum Temperature: 104°C (220°F)
Temperature Control Stability: ±0.5°C (±1°F)
Drive Motor: 1/12hp induction motor
Bath Medium: 11 gal (41.6L) white technical oil

Electrical Requirements
115V 60Hz, Single Phase, 13.0A
220-240V 50 or 60Hz, Single Phase, 6.8A

Dimensions lxwxh,in.(cm)
32.75×14.25×27 (83x36x69)
Net Weight: 79 lbs (35.8kg)

Included Accessories

ASTM D665 Models (K30160, K30165, K30166)
Steel Test Specimens (6)
Type 2 Plastic Specimen Holders (6)
Plastic Beaker Covers (6)

ASTM D3603 Models (K30161, K30167, K30168)
Horizontal Disc Test Assembly (6) consisting of:
plastic beaker cover
horizontal test specimen
vertical test specimen
fluorocarbon washer
plastic cap
stainless steel support rods and hardware

FTIR is convenient and effective for the analysis of foreign matter and other defect analysis.
FTIR encompasses many measurement methods and accessories, including infrared microscopy and single reflection ATR.
Peak detection involves the identification of absorbance at specific wave numbers in a spectrum, and is used for the qualitative and quantitative analysis of sample substances.
Compare the original sample with that of the used one and observed the difference.
Can be obtained different chemical groups available within a sample.

Analysis of wear metals in lubricants is used to determine the condition of engines and other equipment that use lubricant oil.
ICP optical emission spectrometry enables the analysis of multiple elements quickly and precisely by simply diluting the samples.
Offering the highly sensitive simultaneous analysis of metals and inorganic components, without pretreatment, this instrument supports an extensive range of analysis from trace levels to high concentrations.

ICP to measure PPM (parts per million) levels of wear metals, contaminants and additives in oil samples.

Test Method

Foaming of lubricating oils in applications involving turbulence, high speed gearing or high volume pumping can cause inadequate lubrication, cavitations, overflow and premature oxidation. The sample is blown with a controlled volume of air at different specified temperatures, including a newer high temperature test at 150°C. The resultant foam is measured at the end of each aeration period and at different intervals afterward. In the high temperature test, the amount of time required for the foam to collapse to “0” after the aeration period is also measured.


Features and Benefits

Dual-twin models for standard foaming characteristics tests
High temperature liquid baths for ‘Sequence IV’ tests
Automatic time sequence models for both tests
Custom configurations for specialized applications

Flash point is the temperature at which the vapors of a fuel ignite when a test flame is applied. The flash point for all fuels to be used in bulk onboard vessels is set at 60°C minimum (SOLAS* agreement). ISO8217 Grade DMX, a special low cloud point gasoil, may only be stored onboard in drums because of its < 60°C flash point. The fuel flash point is an important quality and safety assurance measure. The flash point of biodiesel is used to detect contamination from low flashpoint methanol. Flashpoint is used in lube oils as an indication of fuel oil contamination.

The Flashpoint Tester / Analyzer is easy to use, completing a fuel flash/no-flash test in less than two minutes. It will determine the flash point of a lube sample within a temperature range of 0 to 300°C in typically 8 minutes and boasts the following core features:

  • Digital display showing test parameters, instrument status, and the flashpoint test result.
  • Audible alarm when flashpoint test is completed and action is required from the operator.
  • Automatic flash detector enhances repeatability and reduces the chance of misinterpretation.
  • Small sample size – 2 or 4ml.



The DDM 2911 and DDM 2910 Density Meters have the features to meet the needs of today’s industries.


Measure API Values in accordance with ASTM D1250 and DIN 51757
QC incoming raw materials
Research new products and additives
Withstands harsh and heavy use environments
Calibrate using petroleum standards


Measure in units of Kg/m3 g/cm3, g/ml pounds/gallon, specific gravity, Baume and more.
Determine concentration in: %, molarity, normality, mole fraction, ppm, and more.
Check bath consistency and ensure proper blending rations.
Wetted materials compatible with the most aggressive chemicals.


Factory installed density measurement methods allow for immediate selection of the correct method to match the most common applications.

For unique measurement applications, create a sample method using an unlimited number of Concentration Tables, Formulas, and Polynomials to match the density measurement methods used in our laboratory.

Detailed Product Description

Thermoelectrically-Cooled Cold-Cranking Simulator measures the apparent viscosity of oils at temperatures from -35°C to -5°C, mainly used for multi-grade oils.

This equipment combines automatic sample loading, computer-controlled operation, and solvent-free cleaning to permit completely unattended operation. No further operator involvement is required after initial loading of the sample table and identification of samples.

It will automatically test up to 30 samples at one time, calculate their viscosities, and record the results, freeing the operator for other tasks. Improved temperature management of the rotor/stator eliminates the need for grouping the samples by temperature of analysis.

This consists of a patented thermoelectrically-cooled rotor/stator, a Sample Table with capacity for 30 oil samples, and an integral CCS Series II Controller. The rotor/stator cell is attached to a vacuum system and a metering constant-displacement injection pump. The rotor/stator cell is cleaned by purging the previously measured sample with a portion of new sample prior to measuring its viscosity. Purged sample is drawn into a waste receiver by the vacuum system. Rotor speed is measured by a high resolution digital encoder. A proprietary software program then converts this data to sample viscosity. Viscosity calculations are based on test data and rotor/stator calibration information stored by the software.

Detailed Product Description

SYD-510Z-1 Automatic Pour Point Tester
Petroleum Products Automatic Pour Point Tester
Automatic Pour Point Tester

SYD-510Z-1 Automatic Pour Point TesterPurpose

The instrument is designed and made as per GB/T510 “Test Methods for Solidifying Point of Petroleum
Products”, and GB/T3535 “Test Methods for Pour Point of Petroleum Products”. It is suitable to determine
solidifying point and pour point of transformer oil and other light oils.
Characteristics: It can fill oil, make determination and print out test data automatically. Adopt semiconductor for refrigeration, so it can make determination rapidly. It can determine solidifying point and pour point independently or at the same time. It has characteristics of LCD display, man-machine conversation, and graphic display interface.

Technical parameters

  • Power supply: AC 220V±10%, 50 Hz;
  • Refrigeration speed: >40°C/10min;
  • The lowest temperature: -60°C;
  • Repeatability for solidifying point: ≤2°C;
  • Repeatability for pour point: ≤3°C;
  • Pressure of cooling water: 0.5kg/cm2;
  • Ambient temperature: room temperature~30°C;
  • Reproducibility: ±4°C;

Stable performance, best price, good quality, and good after-sales service
Usage filed: petroleum testing equipment
Product name: SYD-510Z-1 Automatic Pour Point Tester