Click on the "Contact Us" link below for our normal hours of operation.
Visit www.coronavirus.gov for Information on the Corona-virus disease (COVID-19) Pandemic.
If you do not understand these 3 words, google them: symptom, symptomatic and asymptomatic. Some of us were ignorant at Clarkson but not anymore.

How many young people under the age of 18 have died while having the Corona Virus in the state of California in the USA with a population of 39.5 million?
CDPH shows 81 as of November 1, 2022. This is 0.0002% of the California population. Have a health problem or over 80, yes it is dangerous but so is the Flu and Pneumonia.
Sweden with 10 million people never had any mask mandate and had the same results as the state of California! - - References: CDPH , Flu and Sweden

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YSI

Displaying products 1 - 4 of 4 results
pHotoFlex 251105Y,251100Y,251200Y,251205Y
YSI pHotoFlex STD Colorimeter Only
List Price: $1,142.00
Clarkson Price: $1,027.80
You Save: $114.20 (10 %)
YSI pHotoFlex STD Colorimeter Only
Clarkson 251105Y
pHotoFlex STD Colorimeter Only
YSI 251105Y
pHotoFlex 251105Y,251100Y,251200Y,251205Y
YSI pHotoFlex pH Colorimeter Set
List Price: $2,340.00
Clarkson Price: $2,106.00
You Save: $234.00 (10 %)
YSI pHotoFlex pH Colorimeter Set
Clarkson 251200Y
pHotoFlex pH Colorimeter Set
YSI 251200Y
free shipping
YSI 603168,603222,603169,603170,603171,603172,603173
Pro20 Galvanic DO 4 Meter Kit
List Price: $1,269.00
Clarkson Price: $1,205.55
You Save: $63.45 (5 %)
Pro20 Galvanic DO 4 Meter Kit
Clarkson 603170
Pro20 Galvanic DO 4 Meter Kit
YSI 603170
free shipping
YSI 603168,603222,603169,603170,603171,603172,603173
Pro20 Galvanic DO 10 Meter Kit
List Price: $1,329.00
Clarkson Price: $1,262.55
You Save: $66.45 (5 %)
Pro20 Galvanic DO 10 Meter Kit
Clarkson 603172
Pro20 Galvanic DO 10 Meter Kit
YSI 603172
free shipping