亚洲av情久久久久久久久久久,亚洲二区在线观看,在线观看无码强奸AV

品牌	SKC/美國

UMEx 100甲醛被動式采樣器

被動采樣器的umex 100有一個低2 ppb的檢測限（采樣甲醛。單一使用膠帶umex 100包含一處理與2,4-二硝基苯肼（摘要）可靠的收集。采樣率是validated從15分鐘的兩個24小時或7天。分析performed市冰的高效液相色譜法（HPLC）。

UMEx 100甲醛被動式采樣器

Performance Profile

Sampling Rate for Formaldehyde	28.6 ml/min with a RSD of 7.6% at wind velocity of 5 to 100 cm/sec for 15 minutes to 24 hours 20.4 ml/min at wind velocities < 5 cm/sec for 1 to 7 days See the More Information tab for UME^x 100 sampling rates for other aldehydes.
Detection Principle	Formation of stable DNPH-hydrazone in the presence of formaldehyde
Validation Range	0.06 to 3.0 ppm
Lower Detection Limits	15 min: 200 ppb (0.24 mg/m³) 8 hrs: 5 ppb (0.006 mg/m³) 24 hrs: 2 ppb (0.002 mg/m³) 7 days: 0.2 ppb (0.0002 mg/m³)
Shelf-life	12-mos from date of manufacture at < 39.2 F ([4 C])
Capacity	29 μg/sample
Analysis	Solvent extraction and analysis by HPLC (high-performance liquid chromatography) with UV detection
Accuracy	± 25%, exceeds OSHA requirements
Storage	Before use: < 39.2 F ([4 C]) After use: < 39.2 F ([4 C]) and analyze within 3 weeks Do not store with food.
Temperature Effects	No effect on sampling rate between 10 and 30 C
Humidity Effects	No effect from 10 to 80% relative humidity (RH) Do not use sampler below 10% RH.
Wind Effects	No effect from 5 to 100 cm/sec
Interferences^?	Large amounts of carbonyl compounds may reduce the uptake of formaldehyde. Use in ozone levels < 0.5 ppm.
Dimensions	3.4 x 1.1 x .35 in (8.6 x 2.8 x .89 cm)
Weight	0.38 oz (10.8 gm)

Note:

If sampling in an atmosphere containing formalin, see Sampling Formaldehyde from Formalin Using Passive Samplers for field study information.

對甲醛的準(zhǔn)確和可靠的采集
冰，保證樣品的完整性
精度超過OSHA標(biāo)準(zhǔn)
辨別流行2,4-二硝基苯肼化學(xué)
城市validated OSHA和瑞典研究所
經(jīng)濟和容易使用
無泵或培訓(xùn)所需的
低成本的樣品
樣品和空白介質(zhì)/校正在一個單元
documented吸收率
15分鐘的兩個24小時的樣品
7天的樣本
兩個歐盟conforms ISO 16000 2004年4
符合OSHA規(guī)范方法1007?大學(xué)
在環(huán)保型IP 6C
高度敏感和特異性分析方法
小鴨子unobtrusive
使用兩個簡單的“開/關(guān)"滑蓋
安全
沒有玻璃或化工液體的樣品
樣品濃度的甲醛*
28.6毫升/分鐘enhances吸收率的靈敏度為15分鐘，8小時，和24小時的采樣
多功能的樣品
工作場所的采樣從兩個12小時15分鐘
長期的室內(nèi)空氣采樣率與validated 24小時和7天的樣本
如果在一個*的采樣氣含甲醛，甲醛，甲醛采樣從使用被動samplers（PDF）的現(xiàn)場研究的信息。

訂貨號	描述	價格/人民幣
500-100	SAMPLER, UMEX-FORMALDEHYDE, 10PK	2504
500-100A	SAMPLER, UMEX-FORMALDEHYDE, 25PK	5969

Cat. No.

Description+

P20084		Treated Tape, UMEx 100 Passive Sampler, for QC purposes only, pk/50 Treated Tape, UMEx 100 Passive Sampler, for QC purposes only; single use only, pk/50
500-100		UMEx 100 Passive Sampler, for Formaldehyde, Pk/10 UMEx 100 Passive Sampler, for formaldehyde; detection range from 5 ppb to 5 ppm; 15-minute to 24-hour samples and 7-day samples (sampling periods between 24 hours and 7 days have not been evaluated); single use only, pk/10 Limited shelf-life; freezer storage required Meets OSHA Method 1007 specifications If sampling in an atmosphere containing formalin, see www.skcinc。。ｃｏｍ/instructions/1795.pdf for field study information.
500-100A		UMEx 100 Passive Sampler, for Formaldehyde, Pk/25 UMEx 100 Passive Sampler for Formaldehyde; detection range from 5 ppb to 5 ppm; 15-minute to 24-hour samples and 7-day samples (sampling periods between 24 hours and 7 days have not been evaluated); single use only, pk/25 Limited shelf-life; freezer storage required Meets OSHA Method 1007 specifications If sampling in an atmosphere containing formalin, see www.skcic。。ｃｏｍ/instructions/1795.pdf for field study information.

久久人妻少妇嫩草av,欧美日韩黄色网页,亚洲欧洲中文小说,人妻少妇精品一区三区久久久久久

UMEx 100甲醛被動式采樣器