This is the specatil ink foe seiko 510 printhead,if you want find high quality,you can choose this ink.
  

Physical Parameters:

Color	C M Y K LM LC	Solvent	Ester
Smell	Slightly	pH	6.5-7.5
Viscosity	8-12cp	Flash Point	65°C
Surface Tension	25-35 dynes/cm	Particle Size	<0.20u

LongColor Inks Hue :

Operational Specifications:

Temperature:19 to 31°C/64 to 86 ℉
Relative Humidity:28 to 65% Non-condensing

Package:

1000ml / bottle , 5L / bottle

Storage Specifications:

1. LongColor ink should be stored indoors at a temperature between 5 and 30°C
2. LongColor ink shelf-life is 12 months, when stored as above.
3. Care must be taken to avoid contamination of inks and substrates.
4. Check that the preheat settings are as recommended.