China Test tube without or with rim plain with graduations Manufacture and Factory

Test tube without or with rim plain with graduations

Short Description:

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 Tube

Test Tube Introduction

1.The test tube without rim plain is a round bottom of the flat glass tube, tube melt light. Flat mouth, easy to sterilize and kill bacteria.

2. The test tube with rim plain is a round bottom glass tube with a curling edge (or round mouth). Curl mouth (or round mouth) is used to increase the mechanical strength, and easy to clamp and not easy to fall off.

3. Fermentation test tube It is a thin and short diameter (diameter 6mm, length 30mm) flat mouth, round bottom tube.

About Test Tube

Product Specification

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

1231	Test tube without rim plain
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

1232	Test tube with rim plain
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

1236	Test Tube With graduations
Capacity(ml)	Graduation(ml)	O.D.of. tube(mm)	Length(mm)
5	0.1	11	110
10	0.2	14	130
15	0.2	15	150
20	0.5	17	165
25	0.5	18	180
30	0.5	19	180
50	1	23	200

1233	Fermentation Test Tube
O.D.of. tube(mm)	Length(mm)
6	30

Product Details

Test tube without or with rim plain with graduations (5)

Sealing bottle mouth

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

Clear scale

Excellent scale, durable, give you more accurate scientific data.

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.

Test tube without or with rim plain with graduations (2)

Test tube without or with rim plain with graduations (4)

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.