The Litmus test will identify overcharging, labour irregularities, erroneous charges, purchasing discount retention and the true level of service provider earnings The Litmus Partnership is an independent catering and facilities management consultancy Many of our clients find they do not have the time to constantly check that their service provider is performing according to budget, and is delivering all of the promises that they made in their tender presentation All of our Partners who deliver our consultancy services have at least twenty years experience gained in operating service contracts at Director level