There are certain hindrances with using handheld refractometers, the main one being; obtaining an accurate measurement. When using an optical refractometer, one must place their sample on the prism and look through an eyepiece to determine the measurement of an index of refraction.
The use of a digital refractometer eliminates the uncertainty associated with optical refractometers; a digital refractometer uses an LED light to shine through the sample. When a liquid sample is applied to the measuring surface only some of the light is transmitted through the solution and is lost; while the remaining light is reflected onto a linear array of photodiodes creating a shadow line. The refractive index is directly related to the position of the shadow line on the photodiodes. Once the position of the shadow line has been automatically determined by the instrument, the internal software will correlate the position to refractive index, or to another unit of measure related to refractive index, and display a digital readout.
1. Can you do custom-made?
1).Silk print your logo on the product.
2).Customized Color box.
3).Design and produce based on your idea and draft.
2.How can I get a sample ? What’s the sample fee? Is it refundable ?
Please confirm with us the model you’ll purchase, and you prepaid the sample fee , after sample tested and qualified, we will refund this sample fee when you place the bulk order. We can send out the sample within 2 working days after receiving payment.
3.What should I do if I do not know how to use?
Dear customer, please do not worry, manual user will be sent together, you can also contact us with more technological support.
4.What about the transportation?
It depends on your requirement.We can delivery by air to your airport ,or by sea to your seaport ,and we can also delivery to your office address by express courier,and we also accept to co-operate with your ship agent or forwarder.
5.What about the technical support and maintenence?
Sometimes users will get some problems when they operate the instruments which are unfamiliar or first time use, users can send us emails or call us about detailed information. We will provide users solution or operation video.
For so many years’ experience, our instruments works well during warranty period. If there any parts are broken during warranty period, we would like to provide spare parts for free.