YG(B)201G Textile Formaldehyde tester

【Scope of Application】  
Used for rapid determination of formaldehyde content in various textiles.  
【Related Standards】  
GB/T 2912.1 (ISO 14184.1) , GB/T 2912.2(ISO 14184.2)    
GB18401  SN/T 219   
【Instrument Characteristics】  
1. It adopts the extraction method and can simultaneously measure the formaldehyde content and absorbance value according to the national standard method.  
2. The main unit (equipped with a color touch screen display) can be controlled bidirectionally with a computer, with automatic processing of spectral data and report printing.  
3. It has functions such as absorption curve, selected wavelength, absorbance and transmittance.  
4. It is a spectrophotometer structure, with four-position fully automatic testing, and can automatically test three samples at once.  
5. It can be connected for testing.  
6. Automatic calibration of 100%T and 0%T is available.   
【Technical Specifications】   
1. Working mode: Microcomputer control, Chinese color screen display, report printing, and connection to graphical computer software for testing.  
2. Measurement range: Transmittance: 0% - 100%  
Absorbance: 0 - 2.0  
Formaldehyde content: 0.00 - 1000.00 mg/kg (after dilution 20 times, it can reach 10000 mg/kg)  
3. Measurement accuracy: Formaldehyde content ≤ 2% F.S  
4. Light source: Imported long-life tungsten halogen lamp  
5. Optical system: Self-correcting optical path design, 1200 lines/mm diffraction grating monochromator  
6. Wavelength range: (325 - 1000) nm  
7. Spectral bandwidth: 5 nm  
8. Wavelength accuracy: ±2 nm  
9. Wavelength repeatability: 1 nm  
10. Power supply: AC 220V ± 10% 50Hz 50W  
11. Dimensions: 490 × 415 × 215 mm (L × W × H)  
12. Weight: 20 kg  
13. Working environment temperature: (5 - 40) ℃  
14. Measurement method: Adopt the national standard acetophenone method (GB/T 2912.1 and GB 18401 - 2001). Formaldehyde reacts with acetophenone (in acetic acid - ammonium acetate buffer solution) to form a yellow compound.

I.Introduction   
Model YG（B）201E formaldehyde tester, designed on the basis of standard GB/T2912.1-2009, is used to rapid test and determine formaldehyde content of the textile. Formaldehyde is extracted from a textile sample, which is accurately weighed by the device, with water at 40℃. formaldehyde in textile dissolves in water and the extract liquor is colored with acetylacetone. As the yellow compound absorbs the light selectively, the amount of formaldehyde is then determined colorimetrically.  
II.Main Technical Parameters  
2.1 Power: 220V±10V   50Hz    
2.2 Ambient temperature: 5-40℃  
2.3 Dimensions: 490×415×215mm（L×W×H）  
2.4 Weight of main machine: 20kg  
2.5 Measuring range: 0.00-1000.00mg/kg（the concentration of acetylacetone reagent can reach 10000mg/kg after 20 times dilution）  
2.6 Accuracy: ≤2%   
2.7 Measuring method: refers to acetylacetone method(GB/T2912.1—2009和GB18401—2010) Formaldehyde reacts with acetylacetone (in the presence of acetic acid-ammonium acetate buffer) to form a yellow compound.  
2.8 Optics system: autocollimating optical path design, 1200/mm diffraction grating monochromator  
2.9 Light source:  tungsten halogen lamp  
2.10 Wavelength coverage: 325 – 1000nm  
2.11 Spectral bandwidth: 5nm  
2.12 Wavelength accuracy: ±2nm      
2.13 Wavelength repeatability: 1nm  
III.Instrument Image

Reference sample station

Station 1

Station 2

Station 3

 

IV.Operations 
4.1 touch screen operations
4.1.1 boot screen

Test interface: click it and enter test interface.
Para set: click it and enter parameter setting interface.
Sys set: click it and enter system setting interface.
Data: click it and enter data retrieval interface.

4.1.2 test interface

Absorbency: the type of test
Group No.: the group number of test data storage
No.: the counts of current group of tests
Reference sample  sample 1  sample 2  sample 3: below values in the boxes show testing data
Test station: select required station for testing.
“！”icon: click it to pop up indicating diagram of stations
Test: click it to start testing
Note: reference sample should be placed; in simple test, test samples should be placed in all three stations; in complex test, blank sample, blank reagent and sample separately; in absorbance test, samples should be placed in three stations and test results are all about absorbance.

4.1.3 parameter setting

Sample quality, extraction volume, dilution ratio: input parameters according to the actual situation.
sample number: number of specimens to be tested 
default curve, user curve: calculate concentration curve as request.
note: it is unable to choose user curve without calibration; to calibrate the instrument, please refer to "4.1.4.3 user curve calibration"

Simple test, complex test, absorbance: select one as required
Save: click save the parameters

4.1.4 system setting

Instrument initia: click to enter instrument initialization interface.
Language: click to switch Chinese and English

4.1.4.1 instrument initialization menu

Input password“1988”and click OK to enter initialization interface.
Motor and station: click to enter motor&station calibration interface.
Lamp parameters: click to set parameters of lamp.
User curve: click to enter user curve calibration interface.
Write cpu: click to enter the state of programming cpu.
4.1.4.2 motor&station calibration interface

Please click “!”for station calibration method and read it carefully.
Note: the instrument is calibrated before delivery; if there are any questions, please contact after service engineer.
4.1.4.3 user curve calibration

Calibration process:
according to standard GB/T2912.1, prepare calibration solutions of different concentrations  
(note: instrument calibration can choose 3-9 solution calibration curves )
2. place reference sample in reference station.
3. place the solutions separately in station 1, station 2, station 3
4. input the formaldehyde concentration of the solution
5. put down the lid and click calibration
6. wait for calibration to complete
7.prepare more than 3 kinds of solutions; please choose the second group to repeat step 3-6
(note: when less than 3 kinds of solutions left, keep a vacant station and do not input the corespondent concentration)
8.all solution calibration are completed, and click "save".

Note: Please click “!” and read it carefully; if there are any questions, please contact after service engineer.
4.1.5  data retrieval

Group: check the number of group; the user can click to change the number
Sample quality, extraction volume, dilution ratio, No.: test parameters of the group
Uparrow: click to view the last group of data
Downarrow: click to view the next group of data
Text icon: click to view aggregate data
Trash bin: click to delete the data of current group or all the data
4.1.5.1 data summary
Detail: click to view the detailed data

Detail: click to view the detailed data
Print: click to print data summary
4.1.5.2 detailed data

Print: click to print detailed data
Delete: click to select a specific group of data
V.Test Procedures
1. enter para setting interface to set testing method and parameters.
2. enter test interface to select stations.
3. place the reference sample and test sample in the stations.
4. click【test】to start testing.
5. wait for the test to complete.

VI. Precautions
1. Operators should have related expertise in chemistry and operating skills.
2. Operators must wear protective gloves, masks, masks or goggles when using test reagents. If the reagent is accidentally splashed on the body, it should be immediately washed with water.
3. Children and unrelated persons are not allowed to touch the reagent in case of accidents (at your own risk).
4. The reagents used in the instrument are chemicals, which must be stored in a refrigerator at about 4℃.
5. The power supplied to the instrument must be well grounded to ensure safety.
6. All water must be distilled or water of grade 3.
7. All glassware shall be cleaned with acid pickling solution, tap water and distilled water from the chemistry laboratory before first use.
8. After each test, the colorimetric solution in the flask should be poured out in time, and then cleared with pickling solution and tap water to avoid stain and corrosion of the colorimetric flask.
9. Before inserting the colorimetric flask into the slot, the outside surface of the colorimetric flask must be wiped clean with a soft cloth or paper.
10. Before the colorimetric flask is inserted, the bubbles on the inner wall of the flask should be completely discharged.
11. Before testing, the colorimetric flask, cuvettes and light blocking cover must be inserted well in place to prevent stray light from entering so that affect the test results.
12. If any dust or foreign matter enters the flask pit, it must be cleaned or wiped clean before it is put into the pit.
13. When the test is over, turn off the power of all equipment so as to avoid accidents.
14. If any other malfunction occurs, please contact us.

VII.Safety attentions:
1.according to instrument manual, electricity facilities and water utilities should be installed in line with regulations in case of leakage of electricity and water.
2.keep away from electromagnetic interference source in case of instrument damage or test result precise.
3.Testers with heating function and strength tester must be rigidly operated according to instructions in case of being burnt or pinched. 
4.Testers should not be damped, tilted or placed upside down; testers should be cleaned and cared regularly so as not to influence their service life a or the precise of  next testing results.
5.Once the tester break down, power should be cut off immediately; never disassemble the tester at will at this time, please contact its manufacturer at time or dial 0577-88779894/9895.