Running low on chart recorder ink? This pack of 6 red pens is made specifically for Dickson chart recorders, so you know they’ll work smoothly and reliably. The red ink shows up clear and consistent on your charts, making it easy to track temperature, humidity, pressure, or other data over time. Whether you’re using them in labs, warehouses, HVAC systems, or food storage areas, having extras on hand means no interruptions in monitoring. Simple, no-fuss replacement pens that get the job done. Keep your records accurate and your equipment running without a hitch!