Yes. Please contact us for the MSDS for further information. We only use food-grade oils and non-toxic colourants in our formulation. In the unlikely event that the liquid leaks from the indicator and comes into contact with skin, simply wash with soap and water. If the liquid comes into contact with eyes, rinse immediately with plenty of water and seek medical advice.
Because we like our customers! You can use these free products for testing, training, validation, or just to save money. In the unlikely case any got damaged along the way or someone just wanted to try one, there is no need to get in touch, although we're always happy to hear from our customers. Personally, we think that all companies should give stuff away for free!
Yes. Orientation has no impact on the way it works.