SIBATA

SIBATA Graduated Cylinder, Class B

On demand

Class B borosilicate graduated cylinder with a glass hexagonal base, in eight capacities from 10 mL to 2000 mL.

Variants

C2090
Capacity:
10 mL
Graduation interval:
0.1 mL
C2091
Capacity:
25 mL
Graduation interval:
0.2 mL
C2092
Capacity:
50 mL
Graduation interval:
0.5 mL
C2093
Capacity:
100 mL
Graduation interval:
1 mL
C2094
Capacity:
250 mL
Graduation interval:
2 mL
C2095
Capacity:
500 mL
Graduation interval:
5 mL
C2096
Capacity:
1000 mL
Graduation interval:
10 mL
C2097
Capacity:
2000 mL
Graduation interval:
20 mL

Technical sheet

The everyday measuring cylinder of a working laboratory. Class B tolerance is roughly twice the permitted error of Class A, which is exactly right for the work cylinders actually do — making up washes, measuring solvent for an extraction, batching a stock solution — and wrong only for the volumetric steps that should be done in a pipette or a volumetric flask anyway.

Borosilicate glass throughout, with a hexagonal glass base that resists rolling on the bench and gives the cylinder a wide, stable footprint. A spout at the rim pours without running down the outside.

Eight capacities are stocked:

Catalog	Capacity	Graduation interval
C2090	10 mL	0.1 mL
C2091	25 mL	0.2 mL
C2092	50 mL	0.5 mL
C2093	100 mL	1 mL
C2094	250 mL	2 mL
C2095	500 mL	5 mL
C2096	1000 mL	10 mL
C2097	2000 mL	20 mL

Size so the measured volume falls in the upper half of the cylinder. Reading 20 mL in a 250 mL cylinder wastes the graduation interval and the meniscus is the same width either way; a 25 mL cylinder reads that volume several times more precisely.

Read at the bottom of the meniscus with the cylinder on a level surface and the eye at the liquid line — reading from above is the most common source of error with cylinders, and it is systematic rather than random.