Renseignements généraux

Nº de série

7914-L

Nº de partie

1

Nombre total de parties

3

Ou

S/O

Brevets

S/O

Description générale

.1 HEMOCYTOMETER, GLASS/.2-.3 PIPETS, GLASS, SYNTHETIC BEAD, TUBING RUBBER, & PLASTIC MOUTH PIECE/ CASE, IMITATION LEATHER, VELVET MATERIAL LINING, METAL CLASP/ CONTAINER FOR CASE, CARDBOARD BOX

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

19,0 cm

Largeur

12,0 cm

Hauteur

3,2 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Technologie médicale

Catégorie

Matériel médical

Sous-catégorie

S/O

Fabricant

Ou

THOMAS

Pays

United States of America

État/province

Pennsylvania

Ville

Philadelphia

Contexte

Pays

Inconnu

État/province

Inconnu

Période

C.1925-1960. HEMACYTOMETERS WEREREPLACED BY AUTOMATION C.1960'S. BUT MAY BE USED FOR SOME BODY FLUIDS TODAY

Canada

HEMACYTOMETERS WITH NEUBAUER MARKINGS DECREASED THE ERROR RATE IN MANUAL CELL COUNTS BY MAKING THE BOUNDARIES MORE DISTINCT. REPLACED IN MOST LABS BY THE 1960'S BY AUTOMATED SYSTEMS, THEY REMAINED IN USE FOR CELL COUNTS OF OTHER BODY FLUIDS SUCH AS SPINAL FLUID.

Fonction

USED TO COUNTING RED & WHITE BLOOD CELLS IN BLOOD & FLUIDS SUCH AS CEREBRAL SPINAL FLUID. (REF.1) RED CELL COUNTS DONE BY DRAWING BLOOD TO 0.5 OR 1 MARK & DILUTING FLUID TO 101 MARK GIVING DILUTION OF 1:200 OR 1:100. BEAD IN BULB MIXES SOLUTION EVENLY. DILUTION FACTOR FOR WBC PIPET IS 1:20 & 1:10 (REF.2)

Technique

THE IMPROVED NEUBAUER RULING CONSISTS OF A DOUBLE (INSTEAD OF TRIPLE AS IN ORIGINAL COUNTING CHAMBER) LINE SURROUNDING EACH OF 16 SMALLER SQUARES WHICH GIVES THE OPTICAL EFFECT OF A SINGLE BOUNDARY LINE. THIS THEN AVOIDS CONFUSION (REF.1 & 2) WHILE COUNTING CELLS.

Notes sur la région

Inconnu

Détails

Marques

.1 HEMACYTOMETER, MARKED IN WHITE ON TOP 'IMPROVED/ NEUBAUER/ 1/400 SQ.MM./1/10 MM. deep/ NO. [ETCHED BY HAND] 7914-L/ LEVY/ULTRA/ PLANE/ C.A. HAUSSER/ & SON/ PHILA., U.S.A.'/.2 PIPET, MARKED ON WHITE BACK '6990 A.H.T. CO. PHILADA. U.S.A.' MARKED IN BLACK ON CLEAR GLASS EQUALLY SPACED LINES, 5TH & 10TH MARKED '0.5' & '1.0'. MARKED ABOVE BULB '101'/.3 PIPET, MARKED ON WHITE BACK '9116 A.H.T. CO. PHILADA. U.S.A.' MARKED ON CLEAR GLASS EQUALLY SPACED LINES, 5TH & 10TH MARKED '0.5' & '1.0'. MARKED ABOVE BULB '111'/ PT. CASE, EMBOSSED ON LID FADED GOLD LETTERING 'HEMACYTOMETER/ ARTHUR H. THOMAS COMPANY/ PHILADELPHIA/ U.S.A.'/ Pt. case, paper label on inside of lid, handwritten: ‘P.A./ 291'/ on inner edge of lid, handwritten in white paint: ‘78.1.224'./ Box container, label on top of lid: ‘Mike Boyer [handwritten in ink]/ 19-470 [stamped]/ CANLAB [Co. logo] CANADIAN LABORATORY/ SUPPLIES LIMITED/ MONTREAL - TORONTO - WINNIPEG - EDMONTON'/ Labels on both ends of lid read: ‘LABORATORY APPARATUS AND REAGENTS/ ONE No. 3369-F/ HEMACYTOMETER/ Levy Counting Chamber - Improved Neubauer Double Ruling/ ARTHUR H. THOMAS COMPANY/ PHILADELPHIA, PA., U.S.A.'/ Handwritten in pencil on one label: ‘19-470'.

Manque

COVER GLASS

Fini

.2 PIPET-CLEAR GLASS, WHITEBACKED, SYNTHETIC MIXING BEAD RED, TUBING GOLD COLOURED, MOUTHPIECE WHITE PLASTIC/.3 PIPET-CLEAR GLASS, WHITEBACKED, SYNTHETIC MIXING BEAD WHITE, TUBING GOLD COLOURED, MOUTHPIECE WHITE/ PT. CASE-IMITATION LEATHER, PEBBLED SURFACE COLOURED DARK GREEN, LINED IN DARK GREEN VELVET, METAL CLASP, CHROME-LIKE FINISH/ CARDBOARD BOX CONTAINER IS DARK GREEN

Décoration

S/O