China Lab glassware Test culture tube with screw cap Manufacture and Factory

Lab glassware Test culture tube with screw cap

Short Description:

Product Name: Test culture tube

Characteristic: with screw cap

Material: Boro 3.3 glass/Soda Lime glass

Color: Clear

OEM is available

Payment Term: T/T,L/C,Western Union,Palpay

Samples: Offered within 5 days generally

Loading Port: Qingdao /Shanghai port or up to customer

Delivery Time:15-30 days up to customer’s quantity

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Product Detail

Product Tags

Laboratory Glassware

Test Culture Tube

About Test Culture Tube

Product Specification

The dimensions are all measured by hand, so there may be some errors. Please contact us for the specific freight.

1230	Test culture tube with screw cap
O.D.of. tube(mm)	Length (mm)
12	75
12	100
13	100
15	100
15	150
16	100
16	150
16	160
18	150
18	180
20	125
20	150
25	200

Product Details

Sealing bottle mouth:

Prevent the leakage of liquid or solid particles and the invasion of external impurities.

Flat Bottom:

The bottom of the bottle is round and smooth, the placement is stable and the workmanship is solid.

High borosilicate glass:

Adopt high borosilicate glass, high temperature resistance, strong and durable.

Smooth surface:

The surface of the bottle body is smooth, no protruding feeling, beautiful and generous.

Borosilicate glass has excellent chemical and physical properties.The linear expansion cofficient of the primary hydrolyzable glass is 3.3 for applications requiring excellent chemical resistance and thermal resistance (including thermal shock resistance), as well as high mechanical stability. It is a typical glass for chemical equipment.

Product Parameters

BOROSILICATE GLASS
BORO3.3
SiO2 Content	>80%
Strain Point	520°C
Annealing Point	560°C
Softening Point	820°C
Refractive Index	1.47
Light Transmission(2mm)	0.92
Elastic Modulus	67KNmm-2
Tensile Strength	40-120Nmm-2
Glass stress Optical Coefficient	3.8*10-6mm2/N
Processing Temperature(104dpas)	1220°C
Linear Coefficient of Expansion(20-300°C)	3.3*10-6K-1
Density(20°C)	2.23gcm-1
Specific Heat	0.9jg-1K-1
Thermal Conductivity	1.2Wm-1K-1
Hydrolytic Resistance(ISO 719)	Grade 1
Acid Resistance(ISO 185)	Grade 1
Alkali Resistance(ISO 695)	Grade 2
Thermal Shock Resistance Rod6*30mm	300°C

Matters needing attention

1. The filling of solution should not exceed 1/2 of the tube capacity, and the heating should not exceed 1/3 of the tube capacity.

2. When using the dropper to add the liquid in the test tube, it should be suspended and added, and not extended into the test tube mouth.

3. Take the block solid with tweezers and put it to the mouth of the test tube, and then slowly erect the test tube so that the solid slides into the bottom of the test tube, can not make the solid directly fall into the test tube to prevent the bottom of the test tube from cracking.

4. Use tube clip for heating, and the mouth of the tube should not face the person. When heating the tube containing solids, the orifice is slightly downward, and when heating the liquid, the orifice is tilted about 45°.

5. Heat evenly, so as not to boil or test tube burst.

6. Can not quench after heating to prevent rupture.

7 heating to preheat, to prevent the tube sudden heat and burst.

8. When heating, keep the outer wall of the test tube without water droplets, to prevent the test tube suddenly cold and burst.

9. Do not wash the test tube until it has cooled to room temperature after heating.

10. When using the tube clamp to take the test tube, the tube clamp is set from the bottom of the test tube to the upper part of the test tube. If the length of the test tube is three equal points, it is reasonable for the tube clamp to be located within one third of the end of the test tube mouth.

11. Application of external flame for heating.