Clear, durable plastic test tubes for laboratory use: transparent construction and a sensible, professional design make these tubes easy to handle and inspect, providing comfortable everyday use in the lab. Secure caps and screw closures: each reagent tube is supplied with a lid and a screw cap option for safe, leak-resistant storage. Soft, easy-to-open caps reduce strain during repetitive use while maintaining a reliable seal. Marked for easy observation and tracking: transparent tubes include a marking design so samples and volumes can be observed and recorded quickly and accurately, improving workflow and reducing handling errors. Practical and versatile: designed for routine molecular biology, chemical, biochemical and related laboratory items. The tubes and caps are practical for sample storage, short-term transport and general reagent organization. Consistent, professional build: well-structured, thoughtfully processed tubes and lids deliver the performance expected in laboratory environments without unnecessary complexity. Common applications Sample storage and processing: ideal for storing molecular biology, biochemical or chemical samples that need clear visual inspection and secure sealing. Reagent organization and transport: use the leakproof screw-cap tubes for moving small quantities of reagents or prepared solutions between workstations. Routine lab handling and labeling: marked, transparent tubes speed up identification and recording during experiments, inventory, or quality-control tasks. Key attributes at a glance Material: transparent plastic Closures: lids and screw caps; soft caps for easy opening Performance: leak-resistant when closed, easy visual monitoring with marking design Intended use: molecular biology, chemical, biochemical and general laboratory items This set combines professional design, practical features and reliable closures to simplify everyday laboratory storage and handling.