Ⅰ. Purpose

GD-1792 Mercaptan Sulfur Tester for Distillate Fuels is designed and made as per the National Standard GB/T1792 Test Methods for Mercaptan Sulfur in Distillate Fuels (Potentiometric Titration Methods).

The mercaptan sulfur tester is suitable to determine mercaptan sulfur, which is in the range of 0.0003~0.01% (m/m), in the jet fuels, gasoline, kerosene, and light diesel, which do not contain hydrogen sulfide.

Ⅱ. Technical specification

(I) PHS-3B pH meter

1. Instrument grade: Grade 0.01;

2. Measurement range:

     (1) pH: (0~14.00) pH;

     (2) mV: (0~±1999) mV (automatic polarity display);

     (3) Temperature: (0~100.0) °C;

3. Display resolution: 0.01 pH, 1 mV, 0.1 °C;

4. Temperature compensation range: (0~60) °C;

5. Basic error of the instrument:

    (1) pH: ±0.02 pH±1 number;

    (2) Temperature: ±0.5°C±1 number;

6. Temperature compensation error: ±0.01pH;

7. Repeatability error for electronic unit:

    (1) pH: not more than 0.01 pH;

    (2) mV: not more than 1 mV;

8. Repeatability error for the instrument: not more than 0.01 pH;

9. Stability of electronic unit: ±0.01pH±1 number/3h;

(II) 95-1 Magnetic stirrer:

1. Working mode: continuous;

2. Maximum stirring capacity: 2000 ml;

3. Heating power: 300 W, continuously adjusted;

4. Temperature controlling accuracy: ±0.1°C;

5. Temperature controlling range: 5 °C over room temperature~100°C.

6. Timing range: 20 to 1200 min.

7. Reversal time: 5~30 s.

(III) Titration tube: 10 ml, each scale division is 0.05 ml.