Temperature uniformity and suppressing well plate warping in high throughput measurements

An apparatus comprising:

• a transparent optical barrier to be positioned above at least one well,
• wherein the at least one well is to contain a liquid sample,
• wherein a vessel comprises the at least one well,
• wherein the vessel is transparent and is to be placed within a measurement chamber,
• wherein a light measurement apparatus comprises the measurement chamber,
• wherein the light measurement apparatus is to measure light scattered from the liquid sample and to collect the light scattered from the liquid sample from below the vessel,
• wherein the transparent optical barrier is to seal the at least one well from the measurement chamber;
• and
• a lid to press a bottom surface of the vessel against a well plate retainer of the measurement chamber,
• wherein the lid comprises a high conductivity material,
• thereby spreading heat among the at least one well to keep a temperature among the at least one well uniform,
• thereby preventing the vessel from warping,
• wherein the lid is to press downward on the transparent optical barrier,
• thereby pressing the transparent optical barrier downward on a top surface of the vessel.