Identify your Gram + / Gram -
Particularly useful for staining lactic acid bacteria.
Make a quick stain of a yoghurt or cheese smear in class and observe the lactic acid bacteria with the students.

Composition:

• 80ml of Purple Oxalate Crystal
  
• 80ml of stabilised Lugol liquid
  
• 80ml of rapid differentiator
  
• 80ml of Safranin
  
• 4 5ml droppers
  Technical and educational instructions available on our website.
  
  No. of pairs of students: 30 to 100
  Materials needed: yoghurt, slides, cover slips, sterile water
  Preparation time: 5 minutes the day before
  Conservation: 6 months at room temperature