CHECK - 5039 ads

Friday, August 30, 2019

Penglai Huande Steel Valve Co., Ltd exports swing check valves and the benefits of our swing check valves are as follows: 1. Our swing check valves protect pumps and compressor equipment from damage caused by backflow/reverse flow. 2. It reduces downtime and loss of production due...

Friday, August 30, 2019

Source of Pollution Potential sources of pollution include the following: 1. Pollution from the previous sample which remained in the sample vial. 2. Pollution from the sampling position. 3. Pollution from water remained on the sampling rope. 4. Pollution from the sample vial itself...

Tuesday, August 27, 2019

Quantity : MOQ 50 Pie - Price : USD $ 139.99

Roshan handicrafts Pure Brass Handicrafts Kashmiri Hookah hight -15 inch weight-1400gram material- brass finishing- crome ITEM IS REPRODUCTION NOT SOLD AS AN ANTIQUE A NICE GIFT TO PRESENT OR USE AS A GREAT COLLECTABLE If you have any question regarding item, please mail to us....

Tuesday, August 27, 2019

Quantity : MOQ 50 - Price : 119.99 €

Roshan handicrafts Metal Decor Tree Wall Pocket Mount 5 Candle holder Stand no candle Glass Botile Made in India Handmade: Yes Material: Metal Us : Home Decoration Metal Type: Iron Matching Candle: Small Tealight Type: Wall Mounted Color: Black Size: 60 cm,25 inch weight : 600 gram Shape...

Tuesday, August 27, 2019

Quantity : 50 - Price : $ 139.99

Roshan handicrafts Pure Brass Handicrafts Kashmiri Hookah hight -15 inch weight-1400gram material- brass finishing- kashmiri ITEM IS REPRODUCTION NOT SOLD AS AN ANTIQUE A NICE GIFT TO PRESENT OR USE AS A GREAT COLLECTABLE If you have any question regarding item, please mail to us...

Thursday, August 22, 2019

Quantity : 100 - Price : USD44,000 to USD17,0

The 49-meter advanced concrete pumping is a kind of common construction vehicle, which is internationally advanced in key performances such as pumping efficiency, comprehensive fuel consumption and arm frame vibration. It is complicated to operate the 49m pump truck. It is necessary...

Saturday, August 17, 2019

Quantity : 500kg

High Voltage Insulator Coating (HVIC) is used on excessive voltage insulators to forestall flashover and arcing, particular in severely contaminated environments. Following the following 2 tips, you will get good results: Clean all surfaces of dust, grease and wax & Check temperature...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-D10 Digital Trimmer 3 Modes Ear Hook Trimmer Hearing Aids Hearing Amplifier - Max Sound Output 128±3dB Voltage D.C.1.4V Sound Gain 57±5dB Battery Type LR44H/A675 Total Harmonic Wave Distortion 500Hz ＜6% 800Hz ＜4% 1600Hz ＜1% Battery capacity/Mah...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-D03 BTE FM Balanced Armature Loudspeaker Open Fit Hearing Aid Hearing Amplifier - Max Sound Output 130±3dB Sound Gain 40±5dB Total Harmonic Wave Distortion 500HZ<3%</span> 800HZ<5%</span> 1600HZ<1%</span> Operation Current/mA...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-907 ITE Mini Hearing Aid Hearing Amplifier - Max Sound Output 120 ± 5dB Voltage 1.5V Sound Gain ≥35dB/28 Battery size A10 Total Harmonic Wave Distortion ≤5% Battery capacity/Mah 100 Operation Current ≤6mA Operation current/mA 3.5 Frequency...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-238 Pocket Body Worn Hearing Aid Hearing Amplifier - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥50dB/51.5 Battery size AA Total Harmonic ≤5% Battery capacity/Mah 2400 Wave Distortion Operation ≤4mA Operation current/mA 6.9 Current...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

JH-233 Body Worn Pocket Ear Sound Amplifier / Body Level Hearing Aid - Specification of JH-233 Body Worn Pocket Ear Sound Amplifier Hearing Aid - Max Sound Output 131 ± 5dB Voltage 1.5V Sound Gain ≥55dB/58.9 Battery size AA Total Harmonic ≤5% Battery capacity/Mah ...

Friday, August 16, 2019

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-116 Personal Sound Amplifier Behind The Ear Hearing Aid - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥45dB/44 Battery size LR754 Total Harmonic ≤5% Battery capacity/Mah 68 Wave Distortion Operation ≤4mA Operation current/mA 4.5 Current...

Thursday, August 15, 2019

We need to check if the temperature of the pipette </ a>is different from the temperature difference between the pipette and the tip, which affects the accuracy of the pipette. In general, when the temperature of the removed liquid does not match the temperature of the tip and the pipette...

Wednesday, August 14, 2019

Syringe filters are available out-of-the-box, no need for membrane changes and cleaning, and allow easy purification or detoxification of various solutions, including cell and microbial media, reagents, and additives, protein solutions and buffers. - Maintenance of a syringe filter - 1...

Tuesday, August 13, 2019

Laboratory vacuum filtration equipment is specially designed for laboratory workers to maintain solid-liquid separation of liquid samples. Operation Procedures of Diaphragm Vacuum Pump 1. Put the glass filter flask on the stainless steel workbench, and insert the silica gel plug of...

Saturday, August 10, 2019

Quantity : 1 20ft con - Price : 15USD/m2

Although Sundi, a professional wood plastic composite decking manufacturer has dedicated itself into high performance WPC decking for 10 years, there is no end on technology and performance, we treat every client as our long cooperation friends, to decorate your yard more beautiful...

Friday, August 09, 2019

First, we need to determine if there is a leak in the pipette. 1. Detection method: 1) Visual inspection: first pipette the liquid using the pipette to be tested, then let it stand vertically for 15 seconds to see if there is a slow flow of droplets. If there is a droplet flowing out slowly...

Friday, August 09, 2019

Vacuum pump use precautions The function of the vacuum pump is to remove gas molecules from the vacuum chamber and reduce the gas pressure in the vacuum chamber to achieve the required vacuum. In general, there is a large range from atmospheric to very high vacuum, and so far no vacuum...

Thursday, August 08, 2019

Basic information This valve can strictly prevent the occurrence of backflow pollution, is a safe device to ensure the hygiene of drinking water. Features 1. More superior streamline design, energy - saving effect； 2. Discharge control device and outlet are designed without obstacles...

Thursday, August 08, 2019

Basic information This double flapper check valve can be installed at the water outlet of the pump or the water outlet pipe to prevent backflow of the medium. Features 1. Switch can be up to 100,000 times; 2. Full flow area, low flow resistance; 3. Less likely to accumulate debris; 4...

Tuesday, August 06, 2019

Yufeng INB-M cream cheese injector for doughnuts Doughnut professional use injection machine, it has different injecting needle to meet different types of donuts, such as Jelly donut, donut bars, ball donut and etc. The electronic display will show the filling amount, also you could...

Monday, August 05, 2019

How important it is to conduct your own experiments with a handy pipette! However, even the most perfect instrument needs proper operation and maintenance. When using a pip ette, we should pay attention to the following points: 1. Do not turn the button out of the range; otherwise...

Monday, August 05, 2019

Bottle-top dispenser, also known as a bottle-top distributor and bottle-top pipette, is an instrument for accurately measuring liquid chemicals. Hawach Bottle-top separator is suitable for general acid and alkali, low concentration strong acid and alkali and salts. The specific steps...

Tuesday, July 30, 2019

This article will focus on the methods of using the bottle-top dispensers. 1. Put the intake pipe into the dispenser and then tighten the nut. 2. Put the drain pipe into the dispenser and then tighten it. 3. Take off the cap of the drain pipe and put it under the drain pipe 4. Adjust...

Friday, July 12, 2019

Today, Hawach want to talk about the pre-treatment process for pesticide residue detection from the perspective of food safety – QuEChERS, and also tell you how to pre-treat pesticide residue food. Introduction The present analytical methods and determining techniques, pre-treatment...

Monday, July 08, 2019

The feature of JH-D03 BTE FM Balanced Armature Loudspeaker Open Fit Hearing Aid Hearing Amplifier 1. Modeling exquisite, the button is obvious, easy to operate; 2. Open fit hearing aid can change the ear tube as you need, comfortable wear; 3. Corresponding uncomfortable threshold...

Monday, July 08, 2019

The laboratory vacuum filter unit is designed for laboratory users to filter solid-liquid separation of liquid samples. Stai nless Steel Vacuum Filtrations operation steps: 1. Place the glass filter bottle on the stainless steel vacuum filtrations and insert the silicone plug of...

Monday, July 08, 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Thursday, July 04, 2019

Price : US $1 - 3,000 / Set

A pest control company contaminated the water supply when it used the insecticide to kill termites. The company USES water from garden to mix chlordane and heptachlor in tanker trucks. The end of the hose is immersed in the chemicals, while water in the area are draining. When the...