General Information

Serial #

B774977A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL CASING, WIRING, PARTS/ SYNTHETIC CONTROLS, POWER CORD, PARTS/ GLASS TUBE/RUBBER? HOSE & FEET

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

19.0 cm

Width

12.4 cm

Height

9.4 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Chemistry

Category

Test-measurement equipment

Sub-Category

N/A

Manufacturer

AKA

Barnstead

Country

United States of America

State/Province

Massachusetts

City

Boston

Context

Country

Canada

State/Province

Ontario

Period

Unknown

Canada

EXAMPLE OF EQUIPMENT USED IN MUSEUM ARTIFACT CONSERVATION LABORATORY OF CCI IN WHICH ENVIRONMENT & DETERIORATION RESEARCH WAS CARRIED OUT, IN SUCH AREAS AS EFFECTS OF LIGHTING, TEMPERATURE, HUMIDITY ETC., METHODS OF TRANSPORTATION & PACKING OF ARTIFACTS, & MATERIALS SUCH AS VARNISHES, RESINS & ADHESIVES.

Function

INSTRUMENT WHICH MEASURES PURITY OF WATER BY MEASURING CONDUCTIVITY.

Technical

INSTRUMENT WHICH MEASURES PURITY OF WATER BY MEASURING CONDUCTIVITY VIA PARTS PER MILLION OF SODIUM CHLORIDE. SENSOR IN GLASS TUBE IS CONNECTED TO METER BY TWO WIRES IN RUBBER HOSE.

Area Notes

Unknown

Details

Markings

WHITE & BLACK LETTERING ON CASING TOP READS "Barnstead/ PURITY METER/ MOD. PM-2/ SER. B 74977 A", "MADE IN ? FOR/ BARNSTEAD/ STILL & STERILIZER CO./ BOSTON, MASS./ U.S. PAT. 2263932" & "VOLTS/ 105-120AC/ CYCLES/ 50-60"/ PLATE ON SIDE WITH CONVERSION TABLE FOR P.P.M. NaCl, SPECIFIC RESISTANCE IN OHMS, SPECIFIC CONDUCTANCE IN MICRO-MHOS & READING "Barnstead/ Still & Sterilizer Co., Inc."/ LABEL READING "N.M.C./M.N.C./ 39264"

Missing

APPEARS COMPLETE

Finish

GREY CRINKLE FINISH ON CASING/ FLAT BLACK PAINTED TOP PLATE & CONVERSION TABLE PLATE/ BLACK SYNTHETIC & RUBBER/ COLOURLESS TRANSPARENT GLASS

Decoration

N/A