CN205027670U

CN205027670U - Formaldehyde content check out test set

Info

Publication number: CN205027670U
Application number: CN201420587867.7U
Authority: CN
Inventors: 谷丽维
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-09-28
Filing date: 2014-09-28
Publication date: 2016-02-10
Anticipated expiration: 2024-09-28

Abstract

The utility model provides an easy operation, the accurate formaldehyde content check out test set of result, its characterized in that: measuring solution is equipped with including absorbing device with gas injection absorbing device's aerating device, in the absorbing device. The utility model has the advantages of it is following and beneficial effect: 1, gather quantitative atmosphere sample and absorbent reaction through the inflator pump to color comparison reading under the same condition can be guaranteed, the accurate reliability of testing result has been ensured. 2, detection method sensitivity is high, disturbs for a short time, and the color development time is lacked, and the repeatability is good. 3, simple structure, low cost, convenient operation.

Description

Content of formaldehyde checkout equipment

Technical field

The utility model relates to a kind of formaldehyde testing equipment, particularly relates to a kind of easy accurately detection content of formaldehyde equipment.

Background technology

Along with the development in city and the raising of life of urban resident level, formaldehyde enters indoor with furniture and ornament materials, causes severe contamination to human settlement, therefore detects that the content of formaldehyde in air is very necessary fast and accurately.According to GB18204.26-2000 " assay method of public place formaldehyde in air " and GB/T18883-2002 " Indoor Air Quality standards " regulation, the accurate detection method of formaldehyde is under airtight space, with the atmospheric sample that air sampler collection is quantitative, and gas is imported in absorbing liquid, then detect the content of formaldehyde in absorbing liquid.But the formaldehyde sold in the market is tested oneself, box and formaldehyde examination paper are all rely on the automatic contact detection reagent of formaldehyde in air or test paper to carry out colorimetric readout.But unpredictablely have the formaldehyde in how many air to contact to detect reagent or test paper although this method is easy, and Colorimetric results has much relations with light intensity and viewing angle, the therefore very difficult content of formaldehyde accurately detected in air.

Utility model content

The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of simple to operate, result content of formaldehyde checkout equipment accurately, it is characterized in that: comprise absorption plant and by the aerating device of gas inject absorption plant, absorption plant is built with detection solution.

Preferably, comprise the air inlet needle in gas importing absorption plant in aerating device.

Preferably, the air-out needle for Balance Absorption device internal gas pressure is comprised.

Preferably, the syringe by detecting solution injection absorption plant is comprised.

Preferably, the colour comparator that observation detects solution colour is comprised.

Preferably, the colorimetric card of Determination solution colour is comprised.

Preferably, absorption plant is transparent absorption bottle, and absorption bottle sealing-plug seals.

Preferably, aerating device is inflator pump.

Preferably, colour comparator is opaque without hamper, and colour comparator is provided with observation window, and the surrounding of observation window pastes colorimetric card.

Preferably, inflator pump meets once inflates more than 50ml, and inflator pump is hand push pin type inflator pump, and there is air intake opening at handle place.

The method of operating of content of formaldehyde checkout equipment of the present utility model is as follows:

First prepare checkout equipment inflator pump, air inlet needle, sealing-plug, absorption bottle, air-out needle, colour comparator, syringe, select plug as sealing-plug; Hand push pin type inflator pump selected by inflator pump, and air intake opening, at handle place, promotes once to inflate more than 50ml; Absorption bottle is colourless transparent glass bottle or plastic bottle, and bottleneck is provided with plug, bottle capacity 5-20ml, preferred water white transparency 10ml vial; Air inlet needle is any one syringe needle in specification 18G, 19G, 20G, 21G, 22G, 23G, preferred 22G syringe needle; Air-out needle specification is any one bent angle syringe needle in 15G, 16G, 17G, 18G, preferred 18G bent angle syringe needle; Syringe is 2ml disposable syringe or glass syringe, draws absorbing agent, developer and colour developing promoter successively and join in absorption bottle during use.

Described colour comparator be a kind of White-opalescent without hamper, volume can just hold absorption bottle completely, and the surrounding of box is pasted with colorimetric card.During use, the absorption bottle adding reagent is placed on inside colour comparator, under frontlighting condition, looks squarely observation liquid color, compare with colorimetric card and carry out reading.

Detect solution and comprise absorbing agent, developer and colour developing promoter, absorbing agent is the phenylhydrazine hydrochloride solution of 0.3% ~ 1%, detects consumption 1ml ~ 5ml, developer is 1% ~ 5% liquor ferri trichloridi, consumption 0.1 ~ 1ml, colour developing promoter is 1M ~ 10M hydrochloric acid solution, consumption 0.1 ~ 1ml.The preparation method of absorbing agent is dissolved in deionized water for taking solid phenylhydrazine hydrochloride, obtain phenylhydrazine hydrochloride solution, the preparation method of developer is dissolved in deionized water for taking Solid Ferric Trichloride, obtain liquor ferri trichloridi, the preparation method of colour developing promoter dilutes for carrying out 1: 1 with commercially available concentrated hydrochloric acid and deionized water, obtains hydrochloric acid solution.

During detection, first air-out needle is penetrated plug, and remain on more than liquid level, draw 2ml absorbing agent with syringe and inject in absorption bottle; Then air inlet needle is connected to the exhaust end of inflator pump, and inserts in absorption bottle until below liquid level; Then promoting inflator pump is filled with in absorbing agent by quantitative air 20 times, extract air inlet needle and air-out needle, extract in 0.2ml developer and 0.2ml display promoter injection absorption bottle successively with syringe, shake up, after 2 minutes, absorption bottle is placed in colour comparator, look squarely observation liquid color under frontlighting condition, more just can judge the concentration of formaldehyde in air with colorimetric card.

The utility model compared with prior art, has the following advantages and beneficial effect:

1, reacted by the quantitative atmospheric sample of inflator pump collection and absorbing agent, and colorimetric readout under the same conditions can be ensured, ensure that the accurate reliability of testing result.

2, detection method is highly sensitive, and disturb little, developing time is short, favorable reproducibility.

3, structure is simple, with low cost, easy to operate.

Accompanying drawing explanation

Fig. 1 is view when inflator pump injects air in absorption bottle in the utility model embodiment;

Fig. 2 is the structural representation of colour comparator in the utility model embodiment;

In figure: 1-absorption bottle, 2-hand push pin type inflator pump, 3-air inlet needle, 4-air-out needle, 5-observation window, 6-colour comparator, 7-colorimetric card, 8-plug.

Embodiment

Embodiment in conjunction with Figure of description, will be described further the utility model below.

A kind of content of formaldehyde checkout equipment, comprise absorption bottle 1, hand push pin type inflator pump 2, air inlet needle 3, air-out needle 4, syringe, colour comparator 6, colorimetric card 7, absorption bottle 1 is built with detection solution, absorption bottle 1 plug 8 seals, colour comparator 6 is that White-opalescent is without hamper, colour comparator 6 is provided with observation window 5, and the surrounding of observation window 5 pastes colorimetric card 7, and there is air intake opening at hand push pin type inflator pump 2 handle place.

During detection, first air-out needle 4 is penetrated plug 8, and remain on more than liquid level, draw 2ml absorbing agent with syringe and inject absorption bottle 1 li; Then air inlet needle 3 is connected to the exhaust end of inflator pump, and inserts absorption bottle 1 li until below liquid level; Then promoting inflator pump is filled with in absorbing agent by quantitative air 20 times, extract air inlet needle 3 and air-out needle 4,0.2ml developer and 0.2ml display promoter injection absorption bottle 1 li is extracted successively with syringe, shake up, after 2 minutes, absorption bottle 1 is placed in colour comparator 6, look squarely observation liquid color under frontlighting condition, more just can judge the concentration of formaldehyde in air with colorimetric card 7.

Claims

1. a content of formaldehyde checkout equipment, is characterized in that comprising absorption plant and by the aerating device of gas inject absorption plant, absorption plant is built with detection solution; Comprise the air inlet needle in gas importing absorption plant in aerating device; Comprise the air-out needle for Balance Absorption device internal gas pressure; Comprise the colour comparator that observation detects solution colour; Absorption plant is transparent absorption bottle, and absorption bottle sealing-plug seals; Colour comparator is opaque without hamper, and colour comparator is provided with observation window, and the surrounding of observation window pastes colorimetric card.

2. content of formaldehyde checkout equipment according to claim 1, is characterized in that: comprise the syringe by detecting solution injection absorption plant.

3. content of formaldehyde checkout equipment according to claim 1, is characterized in that: the colorimetric card comprising Determination solution colour.

4. content of formaldehyde checkout equipment according to claim 1, is characterized in that: aerating device is inflator pump.

5. content of formaldehyde checkout equipment according to claim 4, is characterized in that: inflator pump meets once inflates more than 50ml, and inflator pump is hand push pin type inflator pump, and there is air intake opening at handle place.