Viral Nucleic Acid Extraction Kit I

Principle : spin column (silica membrane)
Sample size : 150 µl cell-free fluid such as serum, plasma, body fluid and cell cultured supernatant
Fragment size : 100 bp ~30 kb
Recovery rate : 80 ~ 90 %
Binding capacity : 30 ug
Elution volume : 40 ~ 50 µl
Operation time : 20 min

Important Notes:

Make sure everything is RNase-free when handling this system.
Buffers provided in this system contain irritants. Wear gloves and lab coat when handling these buffers.
Add 1 ml of VNE Buffer to the tube of lyophilized Carrier RNA, mix well by vortexing and transfer the mixture to the VNE Buffer when first open. Store the Carrier RNA added VNE Buffer at 4 °C.
Add required ethanol (96-100%) to Wash Buffer 1 and Wash Buffer 2 before use.
Preheat RNase-free water to 70˚C for elution step.

Problems	Possible reasons	Solutions
Low or no yield of genomic DNA
Incorrect preparation of Wash Buffer 1 or Wash Buffer 2
	Wash Buffer 1 and Wash Buffer 2 is not mixed with ethanol before use	Make sure that the correct volumes of ethanol (96- 100 %) is added into Wash Buffer 1 and Wash Buffer 2 when first open. Repeat the extraction procedure with a new sample.
	The volume or the percentage of ethanol is not correct before adding into Wash Buffer 1 and Wash Buffer 2	Make sure that the correct volumes of ethanol (96- 100 %) is added into Wash Buffer 1 and Wash Buffer 2 when first use. Repeat the extraction procedure with a new sample.
Elution of genomic DNA is not efficient
	RNase-free water not completely absorbed by column membrane	After RNase-free water is added, stand the VNE Column for 2 min before centrifugation.
Column is clogged
	Sample is too viscous	Reduce the sample volume.
Degradation of eluted DNA
	Sample is old	Always use fresh or well-stored sample viral nucleic acid extraction.

APVNK004, APVNK050, APVNK100
α+ Solution^TM
Viral Nucleic Acid Extraction Kit