liquid surface tension test automatic IFT testing equipment

made up of high precise and stable force measurement system, microcomputer control system, platinum plate (ring) measurement device, is compact in design, simple and reliable in structure, easy in operation (automatic/manual). It features net weight in whole range (one-key minimum clearing), whole range automatic calibration, good repeatability, accurate and reliable test result as well as liquid crystal display of test data with S232C output interface.

Main features:
1. The platinum plate test principle enables the operation easy;
2. Fully automatic measurement can avoid the manual operation error;
3. Whole range minimum clearing: one-key minimum clearing in a flash; stable and non-drifting zero position;
4. Automatic calibration in whole range ensures accurate and reliable data and good repeatability;
5. The display value is sample surface tension without re-calculation;
6. The instrument is reasonable in structure and independent in operation, without any attached equipment (such as external computer, etc);
7. The measurement of surface tension can be achieved, and the surface tension varies at different time (especially those containing surface active agent or volatile substance)
8. Balance result can be got in automatic measurement of surface tension of medium and high viscosity liquid samples;
9. It can measure the interfacial tension of non-mixed liquid such as oil/water interface
10. It can totally replace traditional mechanical surface tensiometer;
Main technical parameters
Test method: platinum plate method;
Operation mode: automatic measurement on automatic raising of sample stage;
Measurement range: 0-400mN/m, 
Sensitivity: 0.1mN/m
Accuracy: ±0.2mN/m (error test on literature value of double distilled water and pure alcohol at 20°C);
Repeatability: ±0.2mN/m (error test on literature value of double distilled water and alcohol at 20°C)
Data display: LCD display screen
Range of temperature: indoor temperature
Measurement time: 3-5 seconds for measurement of low concentration sample liquid
Container constant: min.15Ml
Data output: RS 232C
Voltage: commercial power AC220V, 1A

SKZ1013B type

Main features:

1. Combination of both test methods of platinum plate and ring

2. The display value is that of surface tension in test method of platinum plate 

3. The maximum tension of sample is self-locked in test method of platinum ring,  and  then  the  surface  tension  is  converted  by  attached  calculation software or automatically calculated by purchased data processing software 

4. Platinum ring size: wire radius: 0.185mm; ring radius: 9.55mm, ring circumference: 60mm 

5. It is in full compliance with the following domestic and international standards in test method of platinum ring: 

GB/T22237-2008 Determination of surface tension of surface active agent 

JB/T9388-2002 Technical specifications of interface tensiometer 

JB/T18396-2001 Determination of surface tension of natural latex in ring method

SH/T1156-95 Determination of surface tension of synthetic latex 

GB/T6541-86 Petroleum products- Determination of interfacial tension of oil against water (ring method) 

ISO1409-1995 Determination of surface tension of plastics, rubber, polymer dispersion and latex 

ISO6295-1983 Petroleum products- Mineral oils- Determination of interfacial tension of oil against water (ring method) 

And  ISO14090-82,  ASTMD1417,  EN14370,  ZB2025-93,  GB2960-82, GB6541-86 standards, etc.  

6. Fully automatic measurement can avoid the manual operation error;

7. Automatic calibration in whole range ensures accurate and reliable data and good repeatability;

8. One-key minimum clearing in a flash; stable and non-drifting zero position;

9. International advanced lift platform drive technology without vibration and noise;

10. The instrument is reasonable in structure and independent in operation, without  any  attached  equipment  (such  as  external  computer,  etc);  the computer is also optional for data processing;

11. Real time measurement of liquid surface or interfacial tension can be achieved when using the platinum plate, which is very practical for measurement of samples containing surface active agent or volatile substance varies at different time (data processing software can be optional for real time display of test curve with details of tension variation);

12. Automatic measurement of surface tension of medium and high viscosity liquid samples can be achieved when using the platinum plate;

13. The two test methods can measure the interfacial tension of non-mixed liquid such as oil/water interface;

14. Many temperature control options can meet different test requirements 

Main technical parameters 

Test method: platinum plate (or platinum ring) method 

Operation mode: automatic measurement on automatic raising of sample stage 

Data value: The display value is that of surface tension in test method of platinum plate 

The peak value is automatic reserved while the display value is that of sample tension in test method of platinum ring, and then the surface tension needs to be calculated through attached calculation software (or data processing software) 

Measurement range: 0-600 mN/m 

Scope of zero clearing: 0-600 mN/m 

Range calibration: 600 mN/m 

Sensitivity: 0.1mN/m 

Accuracy: ±0.1mN/m (error test on literature value of double distilled water and pure alcohol at 20℃) 

Repeatability: ±0.1mN/m (error test on literature value of double distilled water and alcohol at 20℃) 

Display mode: wide-viewing angle backlighting LTD 

Range of temperature: 0-110℃ (sample and constant temperature bath and external thermostatic bath are required) 

Measurement time: 3-5 seconds for measurement of low concentration sample liquid 

Container constant: min.15Ml 

Voltage: commercial power AC220V, 1A