ASTM D4952 Active Sulfur Doctor Test Package for Petroleum Products
Brand KN
Product origin Dalian,China
Delivery time deliver as soon as received payment
KN-4952 Active Sulfur Doctor Test for Petroleum Products conforms to the ASTM D4952 Standard Test Method for Qualitative Analysis for Active Sulfur Species in Fuels and Solvents (Doctor Test) and ISO 5275 Petroleum products and hydrocarbon solvents — Detection of thiols and other sulfur species — Doctor test.Sulfur present as mercaptans or as hydrogen sulfide in distillate fuels and solvents can attack many metallic and non-metallic materials in fuel and other distribution systems. A negative result in the doctor test ensures that the concentration of these compounds is insufficient to cause such problems in normal use.
KN-4952 Active Sulfur Doctor Test for Petroleum Products
Overview
KN-4952 Active Sulfur Doctor Test for Petroleum Products conforms to the ASTM D4952 Standard Test Method for Qualitative Analysis for Active Sulfur Species in Fuels and Solvents (Doctor Test) and ISO 5275 Petroleum products and hydrocarbon solvents — Detection of thiols and other sulfur species — Doctor test. Sulfur present as mercaptans or as hydrogen sulfide in distillate fuels and solvents can attack many metallic and non-metallic materials in fuel and other distribution systems. A negative result in the doctor test ensures that the concentration of these compounds is insufficient to cause such problems in normal use.
Product Positioning
For qualitative active-sulfur screening in fuel, solvent and distillate oil laboratories, the package provides a complete setup of constant-temperature water bath, amber glassware, stoppered shaking vessels, and transfer / filtration / dispensing / labeling accessories. Reagents and fume hood are not included; customers prepare sodium plumbite, sulfur powder, reference samples and PPE on site according to the method.
Main Technical parameters
Item | Typical Parameter | Remarks / Customizable Options |
Model | KN-4952(Reagent-free Complete Package) | |
Constant-temperature Water Bath | Two heating positions; ambient +5 to 100.0℃ | Range can be extended to -10 to 100℃ (low-temperature circulator optional) |
Temperature Display | 0.1℃ resolution; dual LED windows for PV/SV | Optional 0.01℃ display/recording controller |
Temperature Control Performance | Control accuracy ±0.1℃; fluctuation ±0.1℃; uniformity ±0.1℃ | Per factory calibration report; third-party verification supported |
Bath Structure | 304 stainless steel inner tank, integrally formed, with insulated lid and drain | Inner tank / housing can be upgraded to 316L; 2 positions expandable to 4/6 |
Compatible Vessels | Standard openings fit glassware Φ100 × H150 mm | Non-standard bore / rack customizable |
Power Supply / Power | AC 220 V ±10%, 50 Hz; approx. 1000 W | Optional 110 V/60 Hz |
Bath Dimensions | Approx. 430 × 330 × 240 mm (L × W × H) | Subject to final structural drawing |
Packing Size / Gross Weight | Approx. 620 × 580 × 520 mm; approx. 38 kg | Foam divider and reinforced wooden case customizable |
Glassware and Accessories Configuration
Category | Item | Specification / Material | Qty | Key Parameters |
Volumetric | Amber glass volumetric flask with stopper | 100/250 mL, borosilicate glass 3.3, amber for light protection | 6 | Ground-glass stopper seal; clear graduation; verification/calibration certificate available |
Volumetric | Clear glass volumetric flask with stopper | 100/250 mL, borosilicate glass 3.3 | 2 | For blank/reference solution or purified-water aliquot |
Volumetric | Glass measuring cylinder | 10/25/50/100 mL | 4 | Drip-free pouring lip; clear graduation; Class A/B available |
Reaction | Stoppered measuring cylinder / stoppered color-comparison tube | 25/50 mL, ground-glass stopper, heavy-wall borosilicate | 6 | Withstands repeated shaking; clear viewing for layered separation |
Reaction | Glass beaker | 50/100/250 mL | 6 | Low-form / tall-form optional; pouring spout |
Reaction | Sample cup | 30–100 mL PP / glass | 6 | Resistant to hydrocarbon solvents; labelable |
Transfer | Glass funnel | 75–90 mm | 1 | 60° standard cone angle; filter paper compatible |
Filtration | Suction filtering flask with side arm | 500–1000 mL, heavy-wall borosilicate | 1 | Vacuum resistant to -0.095 MPa; rubber stopper included |
Dispensing | Amber dropping bottle | 30/60 mL with dropper | 2 | Replaceable PTFE / silicone dropper tip; solvent-resistant option |
Accessories | Erlenmeyer flask, glass rod, spatula, test-tube rack, label book / marker | Standard | 1 set | 250 mL Erlenmeyer flask ×2; supports sample numbering |
