Digital tds meter TDS pen Water quality tester tds tester Water quality detector for pool water laboratory the CDC hospitals
Test items: heavy metals， total hardness
Applicable industries: swimming pool， water laboratory， the CDC， the aquaculture industry， hospitals， water purifier water purifier manufacturers
Lowest price，Best product，Excellent service!
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About shipping
1.Contact us if you need better shipping method rather than slow postal mail.
2.we will note "gift" with value $10 for your item in general.
3.Provide tracking number but no if via China Post Ordinary Small Packet Plus.
Track here: www.17track.net/index_en.shtml (a few days after packages sent out).
4.Standard batteries， liquid and other prohibited parts are usually removed before shipping.
5.Some products\` manuals， drivers， softwares only available by downloading or sending by email.
6.Post Air Mail is not fast， please wait patiently， don\`t issue dispute within 30 business days.
About Warranty
1.we guarantee your zero risk purchase experience here.
2.we will be Responsible for any quality problem.
About Feedback
1.your feedback is extremely important to us，please leave us 
and good feedbck to us if you.
get satisfied with our goods and service.
2.Email us before leaving any negative feedback or opening any dispute，we will try our best
to solve the problem. No dispute，Happy Shopping!!!