CN2293052Y - Measuring bottle with outward flow preventing mouth - Google Patents

Abstract

The utility model discloses a measuring bottle with an outward flow preventing mouth, relating to a measuring bottle for control laboratories, and the utility model is composed of a bottle mouth 1, a bottle mouth step 2, a bottle neck 3 and a bottle body. The lower part of the inner side of the bottle mouth 1 has one annular step-shaped bottle mouth step 2 whose inner diameter is smaller than that of the bottle mouth 1 so that liquid drips and stays at the bottle mouth to be not easy to flow outwards when solution is transferred. The utility model has simple structure, convenience and practicability.

Description

The volumetric flask of the anti-outflow of bottleneck

The utility model relates to a kind of laboratory volumetric flask.

Volumetric flask is to be used for the container of constant volume in the chemical experiment, because its effect, determined its bottleneck thin more good more, this just brings sizable difficulty to shift test solution in volumetric flask, during transfer, need high degree of care, do not make on the solution drippage bottleneck limit, otherwise will bring error, even failure to experimental data.At present the volumetric flask bottleneck that uses is normally flat, and that have even low inside and high outside have the gradient slightly.

The purpose of this utility model is to design the volumetric flask of the anti-outflow of a kind of bottleneck, so that the test solution that is dropped on the bottleneck limit can only be flowed in bottle, prevents outflow.

Accompanying drawing is a structural representation of the present utility model.

As shown in drawings, the utility model is by bottleneck 1, bottleneck step 2, bottleneck 3, body 4 Consist of, wherein bottleneck step 2 is a ring-shaped step, and it is positioned at bottleneck 1 inboard on bottleneck 3 tops The bottom, the internal diameter of bottleneck step 2 is less than the internal diameter of bottleneck 1.

The utility model in bottleneck 1 below a bottleneck step 2 is arranged, when shifting solution, just in case careless test solution flows near the bottleneck 1, because bottleneck step 2 is arranged, solution rests on the bottleneck step 2, and bottleneck 1 inwall is higher than bottleneck step 2, has stoped solution toward the bottle outflow, can only be toward stream in the bottleneck 3, the also available distilled water flushing of test solution that attaches on bottleneck step 2 limits advances in the bottle.

The utlity model has characteristics such as simple in structure, practical and convenient.

Claims (1)

1. the volumetric flask of the anti-outflow of a bottleneck, it is characterized in that: described volumetric flask is made of bottleneck 1, bottleneck step 2, bottleneck 3, body 4, wherein bottleneck step 2 is a ring-shaped step, and it is positioned at bottleneck 1 lower inside on bottleneck 3 tops, and the internal diameter of bottleneck step 2 is less than the internal diameter of bottleneck 1.