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Order Salt Free Oligos for PCR, cloning and Sanger sequencing
Salt Free oligos are short strands of synthetic DNA without any chemical modifications – pure, simple, and ready to use.
“Salt-free” means the oligos are cleaned from residual salts and synthesis byproducts, giving you just what you need: clean DNA for your experiment.
They’re ideal for standard applications like PCR, cloning, or Sanger sequencing – when you just need reliable primers without any extras.
ISO 9001 / 13485
Chosen by 1400+ European labs in 2024
No-frills. No nonsense. Just pure DNA.
Order today. Get your oligos tomorrow.
Fast turnaround. No surprises. Just pure DNA.
DNA Oligos in Tubes
DNA Oligos in plates
Why choose salt-free oligos?
✔️ Pure and simple: No chemical modifications, no residual salts – just your custom DNA.✔️ Ready when you are: High synthesis yield and fast turnaround – typically 1 working day.
✔️ No need for purification: High coupling efficiency means high quality even without extra cleanup.✔️ Perfect for: PCR, DNA cloning, Sanger sequencing, and other standard molecular biology applications.✔️ Price sensitive: You order frequently? Call us and we check if you have the best options and price.
Still have questions about our salt-free oligos? Give us a call!
We know ordering custom, salt-free oligonucleotides can be technical—and you might need expert advice. That’s why we offer a 24/7 smart assistant to help you anytime.
Call us at +49 30 219 244 13Let’s talk about your specific application, product options, and oligo specifications — in English or German.
Product Specifications
Synthesis and postprocessing in ultra high throughput.
Make use of a NightXpress delivery by placing your SaltFree Oligo order before 9:00 am CET
Minimum and average yields (OD) per scale and length:
Typical yield and purity applies to a 20mer; Calculation: 1 OD = 5 nmol = 30 μg; may vary for individual dyes, sequences with GC content > 70%, > 3 purine stretches, or strong secondary structures.
The synthesis scale indicates the initial amount of 3' bases; There is no OD guarantee for oligos < 18 and > 35 bases.
Click. Done.
Explore More
Deepen your understanding with curated resources
Whether you need technical validation, inspiration, or application know-how – these links lead the way.
Blog: Primer Design Guide
Blog: Meet the team
Blog: Oligo Decision Tree
Blog: Why salt-free oligos are the unsung hero of molecular biology
Oligonucleotide brochure
RAPD 10mer oligo sequences
Oligo safety data sheet (MSDS)
Spectra of fluorescent dyes
How to order (it’s super easy)
1. Go to our ordering portal
2. Choose "Custom DNA Oligos in Tubes"
3. Enter your sequence
4. Select your purification "salt free"
5. Select your scale
6. Submit & relax – we’ll take care of the rest
Frequently Asked Questions (FAQ)
Quick answers to common concerns: We know that time matters. Here are some of the most common questions we get – and how our NGS Salt Free Oligos can help.
>> More FAQ's Here
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Quality is important for us at Eurofins
Our products and services are produced and performed under strict quality management and quality assurance systems.