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{"title":"PH 5.5-9.0 Universal Ph Indicator Paper , Ph Tester Strips For Home","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/3d\/68\/8185b8b66b7e062b79183c850d07-200x200-1\/ph_5_5_9_0_universal_ph_indicator_paper_2c_ph_tester_strips_for_home.jpg","attrs":{"Brand Name":"YIERYI","Model Number":"TPH02104","Certification":"CE","Place of Origin":"CHINA"}}
{"title":"LR44 Button Cell 4 In 1 19990ppm Aquarium TDS PH Meter","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/35\/66\/43f060b1936f160388adc9e9dbad-200x200-1\/lr44_button_cell_4_in_1_19990ppm_aquarium_tds_ph_meter.jpg","attrs":{"Brand Name":"yieryi","Model Number":"hq9901","Certification":"ce","Place of Origin":"china"}}
{"title":"Acidity Analysis Waterproof ABS ATC Pen Type Ph Meter","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/28\/59\/5b0a645fab1f4cd604ac731da6e7-200x200-1\/acidity_analysis_waterproof_abs_atc_pen_type_ph_meter.jpg","attrs":{"Brand Name":"yieryi","Model Number":"TPH01123","Certification":"CE","Place of Origin":"China"}}
{"title":"Intelligent Backlight 2.40ppm H2 Hydrogen Digital PH Meter","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/db\/6b\/eeafbb9e9249cfdd09daebef7410-200x200-1\/intelligent_backlight_2_40ppm_h2_hydrogen_digital_ph_meter.jpg","attrs":{"Brand Name":"yieryi","Model Number":"CT-8023","Certification":"CE","Place of Origin":"China"}}
{"title":"Yieryi High accuracy aquarium digital pH meter\/ORP meter with Temperature","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/27\/6a\/b0af1114bfba14d28d388ab82e23-200x200-1\/yieryi_high_accuracy_aquarium_digital_ph_meter_2forp_meter_with_temperature.jpg","attrs":{"Brand Name":"YIERYI","Model Number":"ORP-3569","Certification":"CE","Place of Origin":"China"}}
{"title":"Protable LCD Digital PH Meter Pen type ph tester For Test Driking water Wine \/","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/32\/40\/ac3a9198feaa58b8ef07cfa25ad5-200x200-1\/protable_lcd_digital_ph_meter_pen_type_ph_tester_for_test_driking_water_wine_2f_urine.jpg","attrs":{"Brand Name":"Yieryi","Model Number":"PH-2","Certification":"ce","Place of Origin":"china"}}
{"title":"16.00ph Water Litmus LCD Display Calibrating PH Meter","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/cd\/28\/4ae20b0a409eaf8f54dfd0c4cb1b-200x200-1\/16_00ph_water_litmus_lcd_display_calibrating_ph_meter.jpg","attrs":{"Brand Name":"yieryi","Model Number":"pH-2 plus","Certification":"CE,Rohs","Place of Origin":"China"}}
PH 5.5-9.0 Test Indicator Paper Litmus Strips 100pcs/box
Test paper using method:
1. test solution: take a piece of paper on the surface of the dish or glass, to be soaked in liquid glass rod or a dropper to the central strip, observe the change of the color and color, color contrast, determine the nature of the solution.
2., test the nature of the gas: first distilled water test paper wetting, stick to one end of the glass rod, with glass stick test paper close to the gas, observe the change of color, determine the nature of the gas.
3. note:
(1) the test paper can not be directly extended into the solution.
(2) test paper can not touch test tube mouth, bottle mouth, conduit mouth, etc..
(3) when determining the pH of a solution, the test paper shall not be wetted with distilled water beforehand because the wetting test paper is equivalent to the diluted solution being tested, which results in inaccurate measurements. The correct method is to use the glass stick dipped in the solution to drip in the middle of the test paper. After the test paper has changed color, compare with the standard color ratio card to determine the pH of the solution.
(4) after taking out the test paper, the container for holding the test paper shall be tightly covered so as not to be contaminated by some gas in the laboratory.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2012
Total Annual:
1 Million-2.5Million
Ecer Certification:
Verified Supplier
Shenzhen Yieryi Technology Co., Ltd Company Profile
Company Overview
Shenzhen Yieryi Technology Co., Ltd was established in 2012 and is located in the Economic Development Zone of Shenzhen City, Guangdong Province. Leveraging our superior geographic location, convenient transportation facilities, ou... Shenzhen Yieryi Technology Co., Ltd Company Profile
Company Overview
Shenzhen Yieryi Technology Co., Ltd was established in 2012 and is located in the Economic Development Zone of Shenzhen City, Guangdong Province. Leveraging our superior geographic location, convenient transportation facilities, ou...