Sample well strip

A sample holder system for an automated sample analyzer, comprising:

• at least a first well strip and a second well strip, wherein said first and second well strips are of substantially similar configuration, and each well strip comprises
• a first end, a second end, a longitudinal axis extending from said first end to said second end,
• first and second side walls, each of said walls parallel to said longitudinal axis,
• a plurality of wells extending in a linear arrangement along said longitudinal axis, each of said wells capable of holding a fluid sample,
• said first well strip comprising a first engagement piece and a second engagement piece wherein the first engagement piece is unlike said second engagement piece, said first and second engagement pieces being disposed on the same side wall of the first well strip,
• said second well strip comprising another first engagement piece and another second engagement piece, wherein said another first engagement piece is unlike said another second engagement piece, said another first and said another second engagement piece being disposed on the same side wall of the second well strip, wherein each of said first engagement piece and said another first engagement piece comprises a fixed end and a free end and said second engagement piece of said first well strip comprises a receiving component for receiving said free end of said another first engagement piece of said second well strip and said another second engagement piece of said second well strip comprises a receiving component for receiving said free end of said first engagement piece of said first well strip, and
• wherein said first and second well strips are reversibly engageable with each other by horizontal sliding parallel to said longitudinal axis of said well strips and by cooperative engagement of said first engagement piece of the first well strip with the another second engagement piece of the second well strip and cooperative engagement of said second engagement piece of the first well strip with the another first engagement piece of the second well strip.