Research bottle-top dispenser VITLAB® TA²

laboratoryvariable-volume

Product overview
The VITLAB® TA² dispenser is designed for dosing in trace analysis where minimal trace‑metal release and high chemical compatibility are required. Media‑contact parts are manufactured from selected fluoroplastics (ETFE, FEP, PFA, PTFE), Al2O3 (sapphire), platinum‑iridium or tantalum depending on the variant. A validated pre‑use cleaning process reduces trace‑metal release to the low ppb range or, depending on application, to the ppt range.

Chemical resistance and valve spring options
The choice of corrosion‑resistant materials allows use with highly concentrated acids and bases (examples: perchloric, sulfuric, nitric acids). Two valve spring options are available: platinum‑iridium (Pt‑Ir) for applications with strong bases such as NaOH (up to 30%) and HF; tantalum (Ta) recommended for dosing hydrogen peroxide (H2O2). An optional recirculation valve minimizes reagent or sample loss. Volume is adjusted via a screw mechanism with internal toothed bar for fast and precise setting. DAkkS calibration certificate available on request.

Included in delivery

• VITLAB® TA² dispenser (thread GL 45)
• 3 bottle adapters: GL 28 / S 28 (ETFE), GL 32 (ETFE) and S 40 (PTFE)
• Telescopic filling tube
• Recirculation valve (optional)
• Mounting tool
• Quality certificate
• Operating manual

Recommended dispensing media
See technical documentation and downloads for recommended media and application ranges.

Types / Sizes
Volume ml | Valve spring | Recirculation | Graduation ml | A ≤ ± % | CV ≤ % | PU | Cat. No.
1.0 - 10.0 | Pt‑Ir | no | 0.2 | 0.5 | 0.1 | 1 | 1627515
1.0 - 10.0 | Pt‑Ir | yes | 0.2 | 0.5 | 0.1 | 1 | 1627525
1.0 - 10.0 | Ta | no | 0.2 | 0.5 | 0.1 | 1 | 1627535
1.0 - 10.0 | Ta | yes | 0.2 | 0.5 | 0.1 | 1 | 1627545

Note on accuracy
Accuracy and coefficient of variation in accordance with DIN EN ISO 8655‑5, related to the nominal (maximum) volume marked on the device at equal temperature (20 °C) of device, environment and distilled H2O. Tests performed according to DIN EN ISO 8655‑6 with the device filled to capacity and uniform, jolt‑free dispensing.

Technical specifications

• Model / series: VITLAB® TA²
• Nominal volume range: 1.0–10.0 ml (depending on variant)
• Graduation: 0.2 ml
• Accuracy (A ≤ ±): 0.5 % (see table)
• Coefficient of variation (CV ≤): 0.1 % (see table)
• Valve spring options: platinum‑iridium (Pt‑Ir) or tantalum (Ta)
• Recirculation valve: optional
• Materials in contact: ETFE, FEP, PFA, PTFE, Al2O3 (sapphire), Pt‑Ir, Ta (variant‑dependent)
• Chemical compatibility: suitable for highly concentrated acids and bases; Pt‑Ir recommended for NaOH (up to 30%) and HF; Ta recommended for H2O2
• Mounting / connection: thread GL 45; adapters included for GL 28 / S 28 (ETFE), GL 32 (ETFE) and S 40 (PTFE)
• Accessories: telescopic filling tube, mounting tool
• Documentation: operating manual and quality certificate included; DAkkS calibration certificate available
• Intended use: dosing where trace‑metal purity and chemical resistance are required (trace analysis)