Path:
Home >
SN/T >
Page41 > SN/T 2941-2011
|| Home >
Standard_List >
SN/T >
Page41 > SN/T 2941-2011
Price & Delivery
US$209.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 2941-2011: Determination of melamine in plastic materials and products
Status: Valid
| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| SN/T 2941-2011 | English | 209 |
Add to Cart
|
3 days [Need to translate]
|
Determination of melamine in plastic materials and products
| Valid |
Basic data
| Standard ID | SN/T 2941-2011 (SN/T2941-2011) |
| Description (Translated English) | Determination of melamine in plastic materials and products |
| Sector / Industry | Commodity Inspection Standard (Recommended) |
| Classification of Chinese Standard | G31 |
| Classification of International Standard | 83.080 |
| Word Count Estimation | 8,898 |
| Date of Issue | 2011-05-31 |
| Date of Implementation | 2011-12-01 |
| Quoted Standard | GB/T 6682 |
| Regulation (derived from) | National-Quality-Inspection-accreditation (2011) 291 |
| Issuing agency(ies) | General Administration of Customs |
| Summary | This standard specifies the method of high performance liquid chromatography detection of plastic raw materials and products of melamine. This standard applies to plastic materials and products-Determination of melamine. |
SN/T 2941-2011: Determination of melamine in plastic materials and products
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of melamine in plastic materials and products
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Determination of plastic raw materials and products of melamine
Issued on. 2011-05-31
2011-12-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard is proposed and managed by the China Certification and Accreditation Regulatory Commission.
This standard was drafted. People's Republic of China Guangdong CIQ.
The main drafters of this standard. Homocysteine on ZHOU Ming-hui, Liu Yingfeng, Di Cuiping, Zheng Jianguo.
Determination of plastic raw materials and products of melamine
1 Scope
This standard specifies the HPLC method of plastic raw materials and products of melamine.
This standard applies to plastic raw materials and products - Determination of melamine.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Laboratory use specifications and test methods GB/T 6682 Analysis
3 Method summary
After the plastic raw materials and products crushed with a solution of 1% trichloroacetic acid extraction, the extract by centrifugation, filtration, constant volume HPLC
Detection, detection wavelength of 208nm, external standard.
4 Reagents and materials
Unless otherwise specified, the test reagents were analytical grade, analysis of water as a water line with GB/T 6682 regulations.
4.1 acetonitrile. chromatography.
4.2 phosphoric acid.
4.3 potassium dihydrogen phosphate.
4.4 potassium dihydrogen phosphate buffer solution. Weigh 0.8437g potassium dihydrogen phosphate (accurate to 0.0001g) in 1000mL volumetric flask.
900mL of water, adjusted to pH 3 with phosphoric acid with water to volume, shake.
4.5 melamine standard. CAS No. 108-78-01, purity of greater than 99.0%.
4.6 melamine stock standard solution. Weigh accurately 100mg melamine standard (accurate to 0.0001g) in 100mL flask
Are dissolved in water and dilute to the mark, the preparation of standard stock solution to a concentration of 1.00mg/mL of.
4.7 TCA.
4.8 1% TCA solution. Weigh 10g TCA (accurate to 0.01g) in 1000mL volumetric flask, dissolved in water and dilute to
Volume, and mix.
5. Apparatus
5.1 High Performance Liquid Chromatography (HPLC). Equipped with a diode array (DAD) detector.
5.2 ultrasonic water bath.
5.3 Analysis of balance. a sense of the amount of 0.0001g, 0.01g.
5.4 centrifuge. speed of not less than 4000r/min.
5.5 frozen grinder.
Tips & Frequently Asked Questions:
Question 1: How long will the true-PDF of SN/T 2941-2011_English be delivered?
Answer: Upon your order, we will start to translate SN/T 2941-2011_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.
Question 2: Can I share the purchased PDF of SN/T 2941-2011_English with my colleagues?
Answer: Yes. The purchased PDF of SN/T 2941-2011_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.
Question 3: Does the price include tax/VAT?
Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs):
List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?
Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.