This lot contains six vintage A.H.T. Co. No. 8168 glass serological pipettes, each housed in its original individual cardboard protective tube. All six tubes retain their original yellow A.H.T. Co. factory labels, giving the group a strong period laboratory appearance and preserving an important part of the original presentation.

A.H.T. Co., Arthur H. Thomas Company of Philadelphia, was a major American supplier of laboratory apparatus and scientific equipment during the 20th century. Equipment bearing the A.H.T. name was widely used in chemistry, biology, medical, educational and research laboratories, making surviving pieces especially interesting to collectors of scientific instruments and laboratory history.

The pipettes are identified on the original labels as No. 8168 serological pipettes. They are calibrated “To Deliver” with a capacity of 1/10 mL divided into 1/100 mL graduations. The exposed examples show the fine graduation markings running along the glass tube toward the delivery tip.

The lot includes six pipettes and six original cardboard tubes. Two of the tubes remain sealed, while four have been opened. The four exposed pipettes are visible inside or alongside their original containers, while the two sealed examples remain enclosed as originally stored.

One of the most appealing features of this lot is that all six original protective tubes are still present and all six retain their yellow factory labels. Vintage laboratory glassware was often removed from its original packaging when placed into service, so groups surviving with matching labeled containers have added display and historical interest.

The exposed glass is clear and the graduation markings are visible. The cardboard tubes show storage wear, age toning, small scuffs and other signs of long-term handling and storage. The yellow factory labels are still present on every tube and show varying degrees of age consistent with the vintage nature of the set.

Because these are vintage laboratory instruments with an unknown storage and use history, they are being sold as collectible scientific artifacts and are not represented as sterile, currently calibrated, or intended for present-day medical, diagnostic or laboratory use.

An interesting surviving group for a collection of vintage scientific instruments, medical or laboratory history, pharmacy memorabilia, educational equipment, museum-style display, apothecary decor or curiosity cabinet. The combination of six matching pipettes, all six original labeled tubes, and two still-sealed examples makes this a particularly appealing vintage laboratory lot.