This All schools labs are just one in a million. They delivered to my door step without a glitch in their services. I have not gone to their company before,... read more but they provided me first with a good customer services through their sales representative. Also, they are true to type, they do what they say and are professional. If what you want to buy is not clear to you, their sales manager is SCIENTIFICALLY ORIENTED to put you through.He is not just a sales rep, he's a leader too.