Direct Cool® II

SBT® Technique | Gelation Index | Low-Temperature Viscosity

Test Methods
  • ASTM D5133
  • ASTM D7110
  • ASTM D8210
  • ASTM D2983 – Proc. D
  • JPI-5S-56-99
  • Chinese SH/T0732

The SBT® test measures the apparent viscosity of fresh, sooted, or highly oxidized engine oils at low temperatures. It determines the susceptibility of engine oils to flow-limited and air-binding responses during slow cooling conditions by providing continuous rheological data over a broad temperature range (+90°C to -40°C).

Additionally, the multi-purpose Direct Cool® II can be used for running the automated low-temperature viscosity test for ATF, hydraulic fluids, and gear oils per the new ASTM D2983, Procedure D technique. The dual-position design allows operators to test two samples simultaneously, or the ability to run a reference sample alongside an unknown sample as indicated in the ASTM method.

  • Thermoelectric Module Cooling (TMC) eliminates flammable bath mediums.
  • Small, Dual-position, bench-top footprint.
  • Incorporates new all-digital TAV-IIIM SBT® Viscometer model.
  • SBT® Automation Package (w/Laptop) offers the capability to operate up to four, 2-place Direct Cool II® units simultaneously and independently.
  • Self-contained pre-heating: Heats samples up to 90°C prior to prescribed cooling profile.
  • Programmable Temperature Controller maintains bath temperature within ±0.1°C to -40°C.
  • Universal Power capability (110—240VAC, 50/60 Hz)
  • Internal automatic dry air system removes moisture that accumulates during the test.
  • Built-in touchscreen for easy-access temperature control settings and bath operations.

GIR-150 | Gelation Index Reference Oil
LNP-5 | Low-Temperature Newtonian Oil

For a complete listing of part numbers and available container sizes of Tannas Reference Oils, please review the Tannas Reference Oils & Catalysts Parts List.

Visit our Certified Reference Materials page to download SDS sheets or Oil Certificates.

Direct Cool® II with Software Package

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Direct Cool® II


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