per litre

ISO 6883:2000, Animal and vegetable fats and oils -- Determination of conventional mass per volume (litre weight in air)
$65.00
This International Standard specifies a method for the determination of conventional mass per volume (¡Èlitre weight in air¡É) of animal and vegetable fats and oils (hereinafter referred to as fats) in order to convert volume to mass or mass to volume.The procedure is applicable only to fats in a liquid state.The temperature of determination applied for any fat should be such that the fat does not deposit crystals at that temperature. This title may contain less than 24 pages of technical content.

ISO 6560:1983, Fruit and vegetable products -- Determination of benzoic acid content (benzoic acid contents greater than 200 mg per litre or per kilogram) -- Molecular absorption spectrometric method
$48.00
The method consists in extracting the acid from an acidified test portion using diethyl ether, nitrating followed by reduction and Mohler's reaction modified with hydroxylaminehydrochloride, measuring the absorbance of the red complex obtained with a suitable spectrometer. For determining lower concentrations, see ISO 5518. This title may contain less than 24 pages of technical content.

Sub-nanogram per litre detection of the emerging contaminant progesterone with a fully automated immunosensor based on evanescent field techniques [An article from: Analytica Chimica Acta]
$8.95
This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Progesterone is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity in experimental animals and it can be found in various surface waters which are partly used as drinking water resources. Therefore, immunoanalytical methods at a very low limit of detection (LOD) and a low limit of quantification (LOQ) are becoming more and more important for environmental analysis and especially for monitoring drinking water quality. Biosensors have suitable characteristics such as efficiency in allowing very fast, sensitive, and cost-effective detection. Here we describe a fully automated immunoassay for progesterone with a LOD in the sub-nanogram per litre range and a LOQ in the lower nanogram per litre range. In contrast to common analytical methods such as GC-MS or HPLC-MS, the biosensor used requires no sample pre-treatment and no sample pre-concentration. The basis of our sensitive assay is the antibody with a high affinity constant towards progesterone and the robust biosensor setup used.

Jumbo Size Hand Sanitizer Gel in Pump Bottle. Contains Moisturizers & Vitamin E. 62% Ethyl Alcohol. 67.6 Fl Oz/2 Litres. Sold Per Bottle
$9.69
BUYING THIS SIZE SAVES MONEY AND eliminate TRIPS TO THE STORE. VERY HANDY TO REFILL SMALLER BOTTLES.