China Clear and amber grade A Volumetric Flask With ground–in glass stopper or plastic stopper Manufacturer and Supplier

Clear and amber grade A Volumetric Flask With ground–in glass stopper or plastic stopper

Short Description:

Product Name: Volumetric Flask

Characteristic:

1. Class A

2. With ground–in glass stopper or plastic stopper

Material: Boro 3.3 glass

Color: Clear and amber

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

Volumetric Flask

Volumetric Flask Introduction

A volumetric flask ( measuring flask or graduated flask) is a piece of laboratory glassware, a type of laboratory flask, calibrated to contain a precise volume at a particular temperature. Volumetric flasks are used for precise dilutions and preparation of standard solutions.

About Volumetric Flask

Product Specification

1621A	Volumetric Flask grade A.,With ground–in glass stopper or plastic stopper, clear
Capacity(ml)	Capacity tolerance(±ml)	Ground mouth	Height(mm)
5	0.02	39640	74
10	0.02	39640	90
25	0.03	39734	110
50	0.05	39734	140
100	0.1	39796	170
200	0.15	14/15	210
250	0.15	14/15	220
500	0.25	16/16	260
1000	0.4	19/17	310
2000	0.6	24/20	370

1622A	Volumetric Flask amber,grade A,With ground–in glass stopper or plastic stopper
Capacity(ml)	Capacity tolerance(±ml)	Ground mouth	Height(mm)
10	0.02	39640	90
25	0.03	39734	110
50	0.05	39734	140
100	0.1	39796	170
200	0.15	14/15	210
250	0.15	14/15	220
500	0.25	16/16	260
1000	0.4	19/17	310

Instructions

Before using the volumetric bottle, the following two checks are required.

1. The volume of the volumetric flask is consistent with what is needed.

2. Check that the cork is tight and does not leak.

Place water in the bottle near the marking line, plug the stopper tightly, and let it stand for 2 minutes. Check with the dry filter paper along the seam of the bottle to see that there is no water leakage. If it does not leak, turn the plug 180°, plug it tightly, invert it, and test for leaks in this direction. The tight stopper must be kept in a safe place. It is recommended to tie the rope to the bottle neck to prevent it from falling or being mixed with other stoppers.

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