Cart empty

User Account


consumables on line storeTears

We offer numerous standard and specialized Contrived (Artificial) Tears, which have become popular with researchers around the world today. Our Tears are particularly useful for researchers wanting a tear formulation which is very similar to that of human tears, but at a low cost.

We offer several types of Contrived Tears (artificial tears), a standard contrived tear formulation in 5, 10 and 20 ml volume sizes, and a standard Contrived Tear Kit where the tear osmolarity has been varied from 290-360 mOsms/L, allowing researchers a range of standard tears with varying salt concentrations to study disorders such as Dry Eye Syndrome.  Our standard Contrived Tears has a tear osmolarity of 300 mOsms/L.

We also offer Diabetic Tears for researchers either developing or calibrating Diabetes related ophthalmic diagnostic sensors / devices.  Our standard healthy person tears has a fasting glucose concentration of 0.2 mmol/L (200 µM) and a tear osmolarity of 300 mOsms/L, pH 7.4.  Our Contrived Diabetic Tear Kit contains 6 vials with differing glucose levels, known to be present in diabetic tears 0.2, 0.4, 0.6, 0.8, 1.0, 2.0 mmol/L glucose and 300 mOsms/L salt / protein, pH 7.4.

All our tears have been developed from > 15 components known to be present in tears, balancing protein, salt and pH alike, in line with accepted tear formulations and tear glucose levels.

For researchers studying MMP-9, we offer Contrived Tears with MMP-9, offered in 5, 10 and 20 ml convenient volumes. The Tear Osmolarity of our Contrived Tears with MMP-9 is 300 mOsms/L with a non-diabetic glucose level of 200 µM at pH 7.4 and a MMP-9 concentration of 5 ng/ml.

Our MMP-9 Kit, features 6 vials with differing MMP-9 levels. Our Contrived Tears (Artificial Tears) with MMP-9 (an inflammatory marker) have subsequently been developed from the many components known to be present in tears, balancing protein, salt, glucose and pH alike, in line with widely accepted tear formulations. Our MMP-9 Kit offers the same tear formulation as our standard tears (osmolarity - 300 mOsms/L, pH 7.4, 200 µM Glucose), but with varying concentrations of MMP-9, levels known to be found in regular and inflamed tears, 5 (regular), 25, 50, 75, 150 and 300 ng/ml. Our MMP-9 Kit is the ideal solution for both your diagnostic and calibration research needs.

Our tears are sold wet and are already constituted in convenient vials.

Please e-mail our team members at to discuss your tear needs !

Need a specialized Tear formulation, contact our team members at to discuss your needs.

Read more about Ursa BioScience's Contrived Tears in the technology section.