Presep-C DNPH

Comparison	Product Number	Package Size	Price	Inventory
	Distributor 290-34251 Barcode No 4987481396647	20pcs	List Price JPY 38,500	In stock in Japan	Certificate of Analysis

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The solid-phase extraction method, as pretreatment of samples for HPLC and GC analyses, has advantages including reduction of labor and decrease of solvent usage, and now is frequently used instead of conventional methods with extraction solvent. It is also often used in the official methods for environmental and food analyses. There are two types of solid-phase extraction cartridges as follows: a syringe type with one end open (tentatively called "open type"), and a cartridge type with a filler enclosed in it that can be connected to a syringe (tentatively called "closed type"). This is a closed type product with DNPH enclosed in it. Presep-C DNPH is a special collection tube for atmospheric carbonyl compounds (designated by the Offensive Odor Control Law, the Air Pollution Control Law, and U.S. EPA) to be used for its collection as well as for derivatization by 2,4-dinitrophenylhydrazone (DNPH). The product is characterized by its blank components from the cartridge where formaldehyde, acetaldehyde and acetone have been especially reduced. Through the analysis of these, it can assure high measurement accuracy. For the exterior, a polyethylene cartridge of lure fitting type is applied, which makes connection or handling during air collection and solvent extraction easier.

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Product List

Product Name
8 VOC Mixture Standard Solution(each 1mg/mL Methanol Solution)	for Environment Analysis
2 Aldehydes-DNPH Mixed Standard Solution (each 0.1ug aldehyde/uL acetonitrile)	for Air Pollutant Analysis(HPLC)
2 Aldehydes-DNPH Mixture Standard Solution (each 0.1ug Aldehyde/uL Ethyl Acetate Solution) Discontinued	for Air Pollutant Analysis(GC)
6 Aldehydes-DNPH Mixture Standard Solution (each 0.1ug Aldehyde/uL Acetonitrile Solution)	for Stinking Substances Analysis (HPLC)
6 Aldehydes Mixture Standard Solution (each 0.1ug Aldehyde/uL Ethyl Acetate Solution)	for Stinking Substances Analysis (GC)
6 Aldehydes-DNPH Mixture Standard Solution Ⅱ (each 0.1mg Aldehyde/mL Acetonitrile Solution)	for Stinking Substances Analysis (HPLC)
16 Aldehydes-DNPH Mixed Standard Solution(each 10ug Aldehyde/mL Acetonitrile Solution)	for HPLC
Ammonia Standard Solution (0.2μg/μL Water Solution)	for Stinking Substances Analysis
Ammonia Standard Solution II (100uL/mL Water Soluiton)	for Stinking Substances Analysis
n-Butyric Acid Standard Solution (1ug/uL Water Solution)	for Stinking Substances Analysis
Dimethyl Disulfide Standard Solution (0.1ug/uL Benzene Solution)	for Stinking Substances Analysis
Dimethyl Sulfide Standard Solution (0.1μg/μL Benzene Solution)	for Stinking Substances Analysis
Isovaleric Acid Standard Solution (1ug/uL Water Solution)	for Stinking Substances Analysis
Methyl Mercaptan Standard Solution (1μg/μL Benzene Solution)	for Stinking Substances Analysis
8 Offensive Odor Organic Solvents Mixture Standard Solution (each 1μg/μL Pentane Solution)	for Stinking Substances Analysis (GC)
Propionic Acid Standard Solution (1 ug/uL Water Solution)	for Stinking Substances Analysis
Styrene Standard Solution (1ug/uL Pentane Solution)	for Stinking Substances Analysis (GC)
Toluene Standard Solution (1ug/uL Pentane Solution)	for Stinking Substances Analysis (GC)
Trimethylamine Standard Solution (1μg/μL Ethanol Solution)	for Stinking Substances Analysis
n-Valeric Acid Standard Solution (1ug/uL Water Solution)	for Stinking Substances Analysis
Xylene Standard Solution (o -,m -,p - each 1μg/μL Pentane Solution)	for Stinking Substances Analysis (GC)
Wakopak Wakosil-DNPH 4.6*250mm
Wakopak Wakosil-DNPH-II 4.6*150mm
Presep-C DNPH(Short)	for Sample Pretreatment
PresepR-C Ozone Scrubber	for Sample Pretreatment
Acetonitrile	for Aldehyde Analysis
Wakosil R DNPH Eluent A	for HPLC
Wakosil R DNPH Eluent B	for HPLC
WakosilR DNPH-II Eluent A	for HPLC
Wakosil R DNPH-II Eluent B	for HPLC
Formaldehyde 2,4-Dinitrophenylhydrazone Standard Solution(40ug HCHO/mL Acetonitrile Solution)	for Waste Gas Analysis (HPLC)