Palintest DPD XF Photometer Test Tablets – 250 Pack (AP013) for Extended Free Chlorine Testing

Palintest AP013 DPD XF tablets are formulated for extended-range free chlorine measurement in pool and spa water using Palintest photometers and compatible extended-range photometric systems. Ideal for heavily chlorinated pools, shock-treated water, or industrial water treatment where standard DPD 1 may exceed the measurement range. Each pack contains 250 individually foil-sealed tablets.

Key Features

• Tests: Extended-range free chlorine (higher concentrations than standard DPD 1)
• 250 individually foil-sealed tablets per pack — extended shelf life
• Compatible with Palintest extended-range photometers
• Used with DPD Oxystop (AP017) when MPS (potassium monopersulfate) shock treatment interference is present
• Part number / Palintest code: AP013

Test Sequence with Oxystop

When testing water treated with MPS shock: measure free chlorine with DPD XF (AP013), add Oxystop (AP017) to remove MPS interference, then add DPD XT (AP033/1) for total chlorine.

Compatible Test Equipment

• Palintest Lumiso Pooltest 6 Photometer
• Palintest Lumiso Pooltest Expert Photometer Kit

Related Palintest Test Tablets

Chlorine Testing

• Palintest DPD 1 (AP011) – Free Chlorine, Photometer, 250 Pack
• Palintest DPD 1 Rapid (AT010) – Free Chlorine, Comparator/Rapid, 250 Pack — obsolete, limited stock
• Palintest DPD 3 (AP031) – Total Chlorine, Photometer, 250 Pack
• Palintest DPD XF (AP013) – Extended Free Chlorine, Photometer, 250 Pack — this product
• Palintest DPD XT (AP033/1) – Chlorine, Photometer, 250 Pack
• Palintest DPD Oxystop (AP017) – Removes MPS Interference, 250 Pack

pH Testing

• Palintest Phenol Red (AP130) – pH, Photometer, 250 Pack
• Palintest Phenol Red (AK131) – pH, Comparator Use Only, 250 Pack

Alkalinity Testing

• Palintest Alkaphot (AP188) – Total Alkalinity, Photometer, 250 Pack
• Palintest Alkavis (250F) – Total Alkalinity, Rapid, 250 Pack

Hardness Testing

• Palintest Calcicol (AP252) – Calcium Hardness, 250 Pack
• Palintest Hardicol (AP254) – Total Hardness, Photometer, 250 Pack

Other Parameters

• Palintest Bromine (AP060) – Bromine, Photometer, 250 Pack
• Palintest Cyanuric Acid (AP087) – Stabiliser Level, Photometer, 250 Pack
• Palintest Copper (AP187) – Copper, Photometer, 250 Pack
• Palintest Chloride (AP268) – Chloride, Photometer, 250 Pack

Specifications

• Part Number: AP013
• SKU: PAL-47-826
• Parameter: Extended Free Chlorine (DPD XF)
• Pack Size: 250 tablets
• Format: Individually foil-sealed tablets
• Brand: Palintest
• Condition: New

Frequently Asked Questions

What is the difference between DPD 1 and DPD XF?

DPD 1 (AP011) measures free chlorine within a standard concentration range. DPD XF (AP013) is an extended-range formulation designed for higher chlorine concentrations — such as after shock treatment or in heavily dosed pools where standard DPD 1 would exceed the readable range.

When do I need to use Oxystop with DPD XF?

Use Oxystop (AP017) after measuring free chlorine with DPD XF when the pool has been treated with MPS (potassium monopersulfate) shock. Oxystop neutralises MPS interference before you add DPD XT (AP033/1) for the total chlorine reading.