Emcee Model 1140 Micro-Separometer

The Benchmark for Water Separability and Contamination Testing in Jet and Diesel Fuels.

Product Overview Key Features Specs Instrument & Tests Documentation Related Resources Request a Demo or a Quote

Product Overview

For quality control purposes, water separation characteristics of fuels are rated to determine the amount of surface active materials (surfactants) present. Surfactants degrade the performance of filter separators used to remove water from the fuel.

The presence of water can impair engine performance and initiate microbiological growth, which can cause corrosion in tanks and filter plugging in fuel lines. Also for quality control purposes, fuels are subjected to “Clear & Bright” tests to determine the amount of free water and particulate matter in mid-distillates.

Open portable micro-separometer from Emcee with a digital display and keypad on the left, sample chamber and tubing on the right, set against a transparent background.

Close-up of an Emcee model 1140 Micro-Separometer control panel with buttons labeled for power, test selection, and alerts. Includes buttons for Jet A, Jet B, diesel, and error alerts.

Key Features

Improved efficiency by performing 4 discrete tests with a single "Six Pack"

ASTM compliance ensures your results hold up to the most stringent requirements

Consistent, repeatable performance in both lab and field environments

Specs

Standard Test Methods

ASTM D3948 (Jet A), D7224 (Jet), D7261 (Diesel), D4860 (Jet or Diesel)

Tests Performed

Water separation characteristic (D3948, D7224, D7261); Free water & particulate contamination / Clear & Bright (D4860)

Fuel Types

Jet A, Jet B, Diesel

Rating Scale

0–100 (higher rating = less surfactant / less free water and particulate present)

Test Duration

Approximately 5 minutes per test

Instrument Type

Electromechanical

Turbidimeter

Integrated; automatic 100-level light intensity adjustment

Emulsifier

Integrated mechanical mixer with automatic speed control

Syringe Drive

Motorized, programmed rate; speed verified automatically each test (±2 seconds tolerance)

Test Expendables

Disposable “Six Pack” kits (6 tests per box); includes ALUMICEL® coalescer cells, syringe, vials, distilled water

Coalescer Media

5th edition API certified media (D3948/D7224/D7261); Clear & Bright-specific coalescer (D4860)

Power

Internal rechargeable battery; AC power compatible (detachable cords available for various voltages)

Battery Capacity

Approximately 25 tests per full charge

Portability

Fully self-contained; housed in protective carry case

Operating Temperature

65°F – 85°F (18°C – 29°C) recommended for ASTM repeatability/reproducibility compliance

Display

Alphanumeric with step-by-step operator prompting and countdown timer

Alerts & Error Codes

Automated error detection for syringe drive, emulsifier speed, turbidimeter, and battery level (ERR-01 through ERR-06)

Instrument & Tests

Emcee Model 1140 Micro-Separometer, a portable analytical instrument, open in a metal case with buttons and a small display on the left and mechanical components on the right, suggesting technical functionality.

The Model 1140 Micro-Separometer is an electro-mechanical instrument used to perform four discrete tests. ASTM Standard Test Methods D3948 (Jet), D7224 (Jet) and D7261 (Diesel) are used to rate water separation characteristics and D4860 (Jet or Diesel) detects and numerically rates free water and particulate contamination.

This instrument performs each of the four tests above simply by using one of the four “Six Packs” containing the proper coalescer cells.

Water Separation Characteristic
The Model 1140 Micro-Separometer is an electro-mechanical instrument used to perform four discrete tests. ASTM Standard Test Methods D3948 (Jet), D7224 (Jet) and D7261 (Diesel) are used to rate water separation characteristics and D4860 (Jet or Diesel) detects and numerically rates free water and particulate contamination. This instrument performs each of the four tests above simply by using one of the four “Six Packs” containing the proper coalescer cells.

Free Water and Particulate Contamination
Test Method D4860 passes a portion of the sample through a filter medium, which is collected in a clear glass, vial. The vial is placed in the turbidimeter and the meter is adjusted to 100. The processed fuel is discarded and a portion of the unprocessed fuel is placed in the vial, which is re-inserted in the turbidimeter. Higher ratings, 100 is maximum, indicate that there is less free water and particulate present.

“Six Pack” Test Expendables Including Coalescer Cells
A box commonly known as a “Six Pack” that contains six test kits is shown. Each Test Kit contains vacuum packed expendables that are used to perform a single test. Each coalescer/filter is labeled to identify the type of fuel and the applicable ASTM method to be used. A container of distilled water is also included in each Six Pack to perform water separation tests.

Water Separation Characteristic

Free Water and Particulate Contamination

“Six Pack” Test Expendables

Documentation

Title	Description	PDF
Data Sheet	Model 1140 Data Sheet	Download
Manual	Model 1140 Operation Manual	Download

Emcee Model 1140

Micro-Separometer