POL-EKO Freezers Forced Convection

Safely freeze and store samples down to -40 °C in POL-EKO’s ZL laboratory freezer range. Natural-air (ZLN / ZLN-T) and forced-air (ZLW-T) models keep every shelf within set-point thanks to precise PID control, polyurethane insulation and eco-friendly R290 refrigerant.

Smart vs Smart PRO controllers

Feature	Smart	Smart PRO
4.3″ colour touchscreen	✔	–
7″ colour touchscreen	–	✔
LAN + USB ports	✔	✔
Built-in Wi-Fi	–	✔
LabDesk data-logging licence	Optional	Included
DIN 12880 temperature safety class	2.0*	3.2*
*Class depends on model / option. Both versions ship network-ready via Ethernet; Smart PRO simply adds wireless and the larger screen.

Why choose a POL-EKO laboratory freezer?

• -40 °C to 0 °C range (ZLN 85: -25 °C) covers enzymes, plasma & pre-freezing steps.
• Natural or forced-air convection options balance uniformity and energy use.
• LAN/USB logging on all models – plus Wi-Fi & email alarms on Smart PRO.
• Eco-friendly refrigerant R290 keeps GWP to just 3 and lowers running costs.
• Access ports & locking doors support external probes and secure sample storage.
• Castors (ZLN-T / ZLW-T) make it easy to roll the unit up to a biosafety cabinet.

---

Pick the Capacity That Fits Your Workflow

Model	Usable Volume*
ZLN 85	84 L pol-eko.com.pl
ZLN-T 125	130 L pol-eko.com.pl
ZLN-T 200	210 L pol-eko.com.pl
ZLN-T 300	310 L pol-eko.com.pl
ZLW-T 200 (Forced air)	210 L pol-eko.com.pl
ZLW-T 300 (Forced air)	310 L pol-eko.com.pl

*Chamber capacity quoted by POL-EKO; working volume is slightly lower.

From a compact 84 L bench-side freezer to a twin-door 310 L forced-air unit, the range scales effortlessly with your space and throughput.

---

Typical Applications

• Plasma, reagent & enzyme storage at –20 °C
• Long-term sample archiving down to –40 °C
• Pre-freezing before ultra-low (–80 °C) storage
• Frost-resistance testing of construction materials
• QA/QC sample holding in food & beverage labs