I have a doubt about the meaning of the following sentence. I don't know how can I translate it into spanish.
Provision of On-Call Chemical Laboratory Services
Can anybody help me?
The text you have there isn't a full sentence. It looks more like a title for an article or instructions.
Yandex translate gives this:
Prestación de servicios de Laboratorio Químico de Guardia
You are Mexican and you speak Spanish, and yet want it translated into Spanish????
No entiento que quisiera, o porque. Piense demasiado en el ingles?