Certified reference materials, optimal solid-phase extraction and QuEChERS for PFAS analysis [PFAS analysis partner RESTEK]

Making QuEChERS even easier! Now more user-friendly with extraction salts in a slim pack.

Our company offers a range of products including user-friendly QuEChERS products, standard reagents, and accessories. To make the QuEChERS method easier, we provide various products necessary for sample preparation, certified reference materials, and LC and GC columns. If you feel that you are spending too much time and cost on current pesticide sample purification procedures, please try this simple and economical new method. 【Features】 ■ Extraction salts in slim packs for even easier use ■ A total lineup including user-friendly QuEChERS products, standard reagents, and accessories ■ Comprehensive solutions ■ Simple sample preparation and analysis *For more details, please refer to the PDF document or feel free to contact us.

• Other inspection equipment and devices

Explaining rapid, simple, low-cost, efficient, robust, and safe sample preprocessing techniques!

This document covers both Stage 1 (extraction) and Stage 2 (purification) of the "QuEChERS" method, providing a general overview of each stage and information on three key methods. "QuEChERS" is a rapid, simple, low-cost, efficient, robust, and safe sample preparation technique. Images are included for each step to provide clear explanations. We encourage you to read it. [Contents] ■ Overview of the two-stage operation in the QuEChERS method ■ Stage 1: Extraction ■ Stage 2: Purification *For more details, please refer to the PDF document or feel free to contact us.

• Technical and Reference Books

Simplification of workflows and improvement of reliability! Custom formulations tailored to customer specifications are possible.

We would like to introduce our "Custom Reference Standards." With a large inventory of compounds that we regularly update, we can create products tailored to your specifications. You can select compounds, concentrations, and solvents using our convenient online ordering tool. By eliminating the need to spend time and money on purchasing and managing raw materials, training technicians, and creating standard solutions, we simplify your workflow and enhance productivity. 【Features】 ■ Formulations tailored to customer specifications ■ Produced in ISO-certified labs ■ Guaranteed quality ■ Professional consultations available *For more details, please refer to the PDF document or feel free to contact us.

• others

As the new year begins, I would like to extend my heartfelt congratulations on your continued prosperity. I sincerely appreciate your exceptional support throughout the year. This is the STJ Group (Santelecom Japan, STJ Rentec). Now, I am pleased to announce that we will be opening our "Transceiver & Smartphone Rental Shop" simultaneously at three locations nationwide on January 26 (Monday)! ■ List of Services to be Offered - Same-day pickup/return of rental equipment - Usage explanations and demonstrations of rental equipment - Wireless solutions consultation desk - Mobile BPO service counter As a special promotion to celebrate the opening of the rental shop, we are currently running a special price campaign for picking up rental equipment at the shop! For more details, please contact us!

【Notice of Year-End and New Year Holidays】 Thank you very much for your continued support. Our company will be closed for the year-end and New Year holidays as follows: Holiday Period: Saturday, December 27, 2025 – Sunday, January 4, 2026 Please note that inquiries and orders received during the holiday period will be addressed sequentially starting from Monday, January 5, 2026. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about our participation in the IT Trend EXPO 2026 Spring. 《Exhibition Information》 With the concept of "New encounters will change tomorrow's work," one of the largest online exhibitions in the industry will be held. NTT TechnoCross will exhibit in the Human Resources Comprehensive category. We have prepared numerous discussions and sessions featuring special guests who are active on television, allowing even those who are usually busy to efficiently gather information on products and services related to IT and DX. Additionally, the first 10,000 participants will receive a 500 yen Amazon gift card. Please apply early. 《Exhibition Overview》 March 3 (Tuesday) to March 7 (Saturday), 2026, online (free: pre-registration required) 《Participation Application》 https://it.expo.it-trend.jp/key/opl7kgdj *Please apply (free) from the "Receive Ticket / Proceed to Participation Registration" link at the above URL.

The TV commercial "What Will You Do in the New Era?" featuring model and actress Akane Horita will begin airing on December 26, 2025. This work expresses the desire of Tokei Densan to respond to the diverse needs of various industries in today's society, where new technologies, such as the expansion of the AI market, are competing with each other, and to nurture and blossom our customers' futures. Please pay attention to Akane Horita, who is dressed in stylish outfits, listening to the concerns of the target audience and offering support. # CM Overview Title: "What Will You Do in the New Era?" (30 seconds / 15 seconds) CM URLs 30 seconds: https://youtu.be/y_lMs0HRj3w 15 seconds: https://youtu.be/egpzMfh8Kok

Thank you very much for your continued support. We would like to inform you that our company will be closed for the year-end and New Year holidays as follows: Year-end and New Year holiday period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) We apologize for any inconvenience this may cause and appreciate your understanding. *Please note that inquiries made through our website will also be responded to after January 5, 2026 (Monday).