--- title: WPG1 --- Specialty roasters ### WPG1 The WPG1 is a compact, gas-powered roaster designed for coffee professionals who demand precision and consistency in sample roasting. Whether you're developing new roast profiles or evaluating green beans, the WPG1 offers unparalleled control to elevate your coffee craft.​ - Sample coffee side-by-side - Same controls as featured on other Giesen roasters - Fully customizable ![Black Giesen WPG1 sample roaster](https://47580324.fs1.hubspotusercontent-na1.net/hub/47580324/hubfs/Black%20Giesen%20WPG1%20sample%20roaster.webp?width=300&name=Black%20Giesen%20WPG1%20sample%20roaster.webp) - [Sample Roaster](https://giesen.com/w6-series?hsLang=en) - [W1A/E](https://giesen.com/w6-series?hsLang=en) - [W6A/E](https://giesen.com/w6-series?hsLang=en) - [W15A/E](https://giesen.com/w6-series?hsLang=en) - [W30A/Pro](https://giesen.com/w6-series?hsLang=en) Giesen W6 series. ## Up to 24 kg / h. With a 6-kilo capacity per batch and up to 24 kilos per hour, Giesen W6 series roasters deliver efficiency and consistency. Perfectly balanced for professionals who demand both quality and volume. The ultimate centerpiece for your coffee shop. Designed to perfection, it offers the flexibility of full-control manual roasting alongside the convenience of fully automatic roasting. Handcrafted in the Netherlands and shipped worldwide. ![W6seriesRender](https://47580324.fs1.hubspotusercontent-na1.net/hub/47580324/hubfs/W6seriesRender.png?width=300&name=W6seriesRender.png) Precise and scaleable. ### Precision roasting on a micro scale The Giesen WPG1 offers full control over heat, drum speed, and airflow—critical parameters for replicable roast profiling. Designed for 50–250g batches, it mirrors the behavior of larger Giesen machines, enabling accurate translation of sample roasts to production scale. Integrated data logging ensures every variable is tracked, analyzed, and repeatable. [Request a Quote](https://giesen.com/request-a-quote?hsLang=en) ![Close up of a Giesen WPG1 sample roaster](https://47580324.fs1.hubspotusercontent-na1.net/hub/47580324/hubfs/WPG1%20website.18.png?width=300&name=WPG1%20website.18.png) Serious sampling. ### Engineered for accuracy The WPG1 is a high-precision tool for quality control, profile development, and green coffee evaluation. Compatible with roast profiling software and equipped with optional infrared bean temperature sensing, it delivers laboratory-grade data in a compact, gas-powered form. [Get in touch](https://giesen.com/contact?hsLang=en) ![Side view of a black Giesen WPG1 sample roaster](https://47580324.fs1.hubspotusercontent-na1.net/hub/47580324/hubfs/WPG1%20website.17.png?width=300&name=WPG1%20website.17.png) General specifications** **Measurements **840 x 472 x 763 mm **Weight **112 kg (roaster only) **Minimum batch size **50 grams **Maximum batch size **250 grams **Sound level **70 dB (A) **Chimney diameter **Ø 80 mm Ranges** **Underpressure range** 80 - 150 Pa **Drum speed range** 45 - 60 Hz **Temperature setpoint range** 100 - 250 °C Certifications** **Standard certifications** CE  Electrical specifications** **Supply voltage **230V AC  **External fusing **1 x 16A **Maximum electrical power **0,5 kW Gas specifications** **Gas connection **G 3/8" **Maximum gas consumption **G20 - 0,5 m³/h G25 / G25.3 - 0,5 m³/h G30 - 0,1 m³/h G31 - 0,1 m³/h **Gas inlet pressure **G20 - 25 mbar G25 / G25.3 - 20 mbar G30 - 30 / 37 / 50 mbar G31 - 30 / 29 / 50 mbar** ** Optional additions** **Giesen Profiler** **Presentation table** **SFE filter** **Support router** **Double-readout sensor** The serious stuff. ## Technical data. If you need any further technical information that you can't find on this page, please contact us. We will be happy to help you! Temperature control** Giesen roasters combine advanced temperature control with cutting-edge automation, ensuring consistency and ease in every roast. With features like automatic mode and burner percentage control, you have the tools to master your craft and achieve unparalleled results. Airflow control** Giesen roasters feature advanced airflow control, allowing you to fine-tune the roasting environment to achieve your desired flavor profiles. By adjusting the underpressure settings, you can influence the heat transfer and development of your beans. Drumspeed control** Giesen roasters feature adjustable drum speed control, empowering you to perfect your roasting process. By modifying the drum's revolutions per minute (RPM), you can balance conductive and convective heat transfer, ensuring uniform bean development. General specifications** **Measurements **W6A - 1427 (L) x 723 (W) x 1705 (H) W6E - 1410 (L) x 723 (W) x 1705 (H) W6A Pro - 1623 (L) x 2414 (W) x 1944 (H) **Weights **W6A - 485 kg (roaster only) W6E - 496 kg (roaster only) W6A Pro - 600 kg (roaster only)** ** **Minimum batch size **W6A - 3 kg W6E - 3 kg W6A Pro - 3,5 kg** ** **Maximum batch size **W6A - 6 kg W6E - 6 kg W6A Pro - 7 kg** ** **Sound level **W6A - 70 dB (A) W6E - 70 dB (A) W6A Pro - 70 dB (A)** ** Electrical specifications** **Supply voltage **W6A - 230V AC (1L+N+PE) W6E - 400 V AC (3L+N+PE) W6A Pro - 230V AC (1L+N+PE) **External fusing **W6A - 1 x 16A W6E - 3 x 32A W6A Pro - 1 x 16A** ** **Max. electrical power **W6A - 1,7 kW W6E - 17 kW W6A Pro - 2,5 kW *Keep in mind that this is the absolute maximum power consumption. Actual average usage will be much lower.* Ranges** **Underpressure range **80 - 150 Pa (min. - max.) Default value: 110 Pa **Drum speed range **36 - 51 Hz (min. - max.) Default value: 46 Hz** ** **Temperature setpoint range **100 - 250 °C (min. - max.) Default value: 200 °C** **   [Request a Quote](https://giesen.com/contact?hsLang=en) ## Giesen essentials. [![Profiler](https://giesen.com/hs-fs/hubfs/Profiler.jpg?width=300&name=Profiler.jpg) Profiler Choose for ultimate control. ](https://giesen.com/profiler?hsLang=en)[![destoner-2](https://giesen.com/hs-fs/hubfs/destoner-2.jpg?width=300&name=destoner-2.jpg) Destoner Keeping it clean. ](https://giesen.com/destoner?hsLang=en)[![cyclone](https://giesen.com/hs-fs/hubfs/cyclone.jpg?width=300&name=cyclone.jpg) External Cyclone Less mess, more roasting. ](https://giesen.com/external-cyclone?hsLang=en)[![gcc](https://giesen.com/hs-fs/hubfs/gcc.jpg?width=300&name=gcc.jpg) GCC No more heavy lifting. ](https://giesen.com/coffee-conveyor?hsLang=en)[![cec-2](https://giesen.com/hs-fs/hubfs/cec-2.jpg?width=300&name=cec-2.jpg) Emission Cleaning Fresh air, fresh coffee. ](https://giesen.com/roasting-equipment?hsLang=en) ### Let's talk! *We would love to talk to you about your ideas, wishes and coffee dreams! * [Get in touch!](https://giesen.com/contact?hsLang=en) ```json { "@context" : "https://schema.org", "@type" : "Organization", "address" : { "@type" : "PostalAddress", "addressCountry" : "", "addressLocality" : "Dinxperlo", "addressRegion" : "Nederland", "postalCode" : "", "streetAddress" : "Anholtseweg 44" }, "email" : "info@giesen.com", "knowsLanguage" : "en", "logo" : { "@type" : "ImageObject", "url" : "https://47580324.fs1.hubspotusercontent-na1.net/hubfs/47580324/V3-Dark@20x.png" }, "name" : "Giesen Coffee Roasters", "telephone" : "+31 (0) 315 68 13 77", "url" : "https://giesen.com/wpg1" } ```