TUBES
364
Test / Recrystallization / Viscosity
Reusable Test Tubes with Glass Pennyhead Stoppers • Round bottom • Uniform wall thickness for maximum service • Durable white ceramic enamel marking spot on each tube • Designed from ASTM Specification E982, Type III requirements • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
Small Craig Recrystalization Tubes A combination crystallizing and filtration centrifuge tube. Filtered solutions are allowed to cool in the Craig tube, inducing crystallization.
• •
Two are required to balance in a centrifuge
Tubes and stoppers sold separately
• Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements The Craig stopper is placed in the tube neck and the whole apparatus is inverted into a test or centrifuge tube. Centrifuging forms a mat of crystals between the stopper and the walls of the Craig tube and draws away excess solvent. Further washing and crystallization steps are possible. Part Number Description Case Qty 747332-0001 Craig Tube, 1 mL 1 747332-0002 Craig Tube, 2 mL 1 747331-0001 Glass Plug for 1 and 2 mL Craig Tube 1
Capacity to Neck (mL)
Stopper Size
OD x Length (mm)
Case Qty
Part Number
45100-13100 45100-16150 45100-19150 45100-25200
7
9
13 x 100 16 x 150 19 x 150 25 x 200
6
18 26 65
13 13 19
24 24 24
Replacement Parts
Part Number
Case Qty
Description
Accessories
850100-0009 Size 9 Solid Pennyhead Stopper, Medium Length 1 850100-0013 Size 13 Solid Pennyhead Stopper, Medium Length 1 850100-0019 Size 19 Solid Pennyhead Stopper, Medium Length 1
Part Number 747331-0631
Description
Case Qty
PTFE Plug for 1 and 2mL Craig Tube
1
Graduated Test Tubes with Beaded Rim • Excellent choice for general laboratory use • Plain top, beaded rim • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
Varnish Viscosity Tubes These viscosity tubes are for rough control work where bubble comparison is made to limit samples of known viscosity.
•
Flat bottomed
• Durable white ceramic enamel lines at 27 mm, 100 mm and 108 mm from the outside bottom • Reference ASTM D1545 • Manufactured from 51 expansion borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class B requirements Part Number ID (mm) Length (mm) Case Qty 46463-1075 10.75 114 144 Viscometer Tubes Cannon-Fenske uncalibrated viscometer tube for use in obtaining kinematic viscosities of transparent liquids (ASTM Method of Test D445). • KIMAX® tube designed from ASTM Specification D446 • Permanently marked with an individual serial number • Viscosity ranges shown below are for an efflux time greater than 200 seconds • Lines and legend are printed black • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
Part Number Capacity (mL)
OD x Length (mm)
Case Qty
898250-0005 898250-0025
5
13 x 90 19 x 170
1 1
25
Graduated Test Tubes with Reinforced Bead Top • Reinforced bead top • Scale is permanent brown stain • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements Part Number Capacity (mL) OD x Length (mm)
Case Qty
46350-10
10
16 x 125
1
Large Craig Recrystallization Tubes A combination crystallizing and filtration centrifuge tube. Filtered solutions are allowed to cool in the Craig tube, inducing crystallization.
•
Two are required to balance in a centrifuge
• Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements The Craig stopper is placed in the tube neck and the whole apparatus is inverted into a test or centrifuge tube. Centrifuging forms a mat of crystals between the stopper and the walls of the Craig tube and draws away excess solvent. Further washing and crystallization steps are possible. Part Number Capacity (mL) Tube Height (mm) Case Qty 283550-0004 4 80 1 283550-0007 7 100 1
Calibration against a standard liquid of known viscosity or against a second viscometer with a known constant must be made before use.
Approximate Constant
Kinematic Centistokes
Part Number
Case Qty
46460-50 46460-100 46460-150 46460-200 46460-300 46460-350 46460-400
0.004 0.015 0.035
.8 to 4 3 to 15 7 to 35
1 1 1 1 1 1 1
0.1
20 to 100 50 to 250
0.25
0.5 1.2
100 to 500 240 to 1200
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